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248104179931 = 268792335013
BaseRepresentation
bin1110011100010000101…
…0010101100011011011
3212201101210210012220011
43213010022111203123
513031104132224211
6305551045342351
723632152506356
oct3470412254333
9781353705804
10248104179931
1196247383603
12401017079b7
131a51c38ca7a
14c018b1529d
1566c1684921
hex39c42958db

248104179931 has 4 divisors (see below), whose sum is σ = 248196517632. Its totient is φ = 248011842232.

The previous prime is 248104179769. The next prime is 248104179941. The reversal of 248104179931 is 139971401842.

248104179931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139971401842 = 269985700921.

It is a cyclic number.

It is not a de Polignac number, because 248104179931 - 217 = 248104048859 is a prime.

It is a super-2 number, since 2×2481041799312 (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248104179941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46164820 + ... + 46170193.

It is an arithmetic number, because the mean of its divisors is an integer number (62049129408).

Almost surely, 2248104179931 is an apocalyptic number.

248104179931 is a deficient number, since it is larger than the sum of its proper divisors (92337701).

248104179931 is an equidigital number, since it uses as much as digits as its factorization.

248104179931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92337700.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 248104179931 in words is "two hundred forty-eight billion, one hundred four million, one hundred seventy-nine thousand, nine hundred thirty-one".

Divisors: 1 2687 92335013 248104179931