312644751452 has 12 divisors (see below), whose sum is σ = 596867252856. Its totient is φ = 142111250640.

The previous prime is 312644751451. The next prime is 312644751457. The reversal of 312644751452 is 254157446213.

It is a super-2 number, since 2×312644751452² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 7105562533 = 312644751452 / (3 + 1 + 2 + 6 + 4 + 4 + 7 + 5 + 1 + 4 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312644751451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3552781223 + ... + 3552781310.

It is an arithmetic number, because the mean of its divisors is an integer number (49738937738).

Almost surely, 2^312644751452 is an apocalyptic number.

It is an amenable number.

312644751452 is a deficient number, since it is larger than the sum of its proper divisors (284222501404).

312644751452 is a wasteful number, since it uses less digits than its factorization.

312644751452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7105562548 (or 7105562546 counting only the distinct ones).

The product of its digits is 806400, while the sum is 44.

The spelling of 312644751452 in words is "three hundred twelve billion, six hundred forty-four million, seven hundred fifty-one thousand, four hundred fifty-two".