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1312179241 = 10139129419
BaseRepresentation
bin100111000110110…
…0100010000101001
310101110002121112011
41032031210100221
510141404213431
6334112315521
744342224312
oct11615442051
93343077464
101312179241
1161376675a
12307542ba1
1317bb10729
14c63b1609
157a2e8cb1
hex4e364429

1312179241 has 4 divisors (see below), whose sum is σ = 1312318800. Its totient is φ = 1312039684.

The previous prime is 1312179227. The next prime is 1312179251. The reversal of 1312179241 is 1429712131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312179241 - 211 = 1312177193 is a prime.

It is a super-2 number, since 2×13121792412 = 3443628721022672162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312179251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54571 + ... + 74848.

It is an arithmetic number, because the mean of its divisors is an integer number (328079700).

Almost surely, 21312179241 is an apocalyptic number.

It is an amenable number.

1312179241 is a deficient number, since it is larger than the sum of its proper divisors (139559).

1312179241 is a wasteful number, since it uses less digits than its factorization.

1312179241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139558.

The product of its digits is 3024, while the sum is 31.

The square root of 1312179241 is about 36224.0147001958. The cubic root of 1312179241 is about 1094.7905859477.

The spelling of 1312179241 in words is "one billion, three hundred twelve million, one hundred seventy-nine thousand, two hundred forty-one".

Divisors: 1 10139 129419 1312179241