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10115445031 = 48571208261
BaseRepresentation
bin10010110101110110…
…10111000100100111
3222002221222211221021
421122323113010213
5131204023220111
64351425032011
7505445602246
oct113273270447
928087884837
1010115445031
1143209a562a
121b63785607
13c528ab043
146bd61495d
153e30b3d71
hex25aed7127

10115445031 has 4 divisors (see below), whose sum is σ = 10115701864. Its totient is φ = 10115188200.

The previous prime is 10115445013. The next prime is 10115445061. The reversal of 10115445031 is 13054451101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10115445031 - 221 = 10113347879 is a prime.

It is a super-2 number, since 2×101154450312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10115444987 and 10115445005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10115445061) 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, 55560 + ... + 152701.

It is an arithmetic number, because the mean of its divisors is an integer number (2528925466).

Almost surely, 210115445031 is an apocalyptic number.

10115445031 is a deficient number, since it is larger than the sum of its proper divisors (256833).

10115445031 is an equidigital number, since it uses as much as digits as its factorization.

10115445031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256832.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 10115445031 its reverse (13054451101), we get a palindrome (23169896132).

The spelling of 10115445031 in words is "ten billion, one hundred fifteen million, four hundred forty-five thousand, thirty-one".

Divisors: 1 48571 208261 10115445031