312547631397 has 16 divisors (see below), whose sum is σ = 428581974912. Its totient is φ = 202454683200.

The previous prime is 312547631393. The next prime is 312547631423. The reversal of 312547631397 is 793136745213.

It is not a de Polignac number, because 312547631397 - 2² = 312547631393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312547631393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1855854 + ... + 2017247.

It is an arithmetic number, because the mean of its divisors is an integer number (26786373432).

Almost surely, 2^312547631397 is an apocalyptic number.

312547631397 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

312547631397 is a deficient number, since it is larger than the sum of its proper divisors (116034343515).

312547631397 is a wasteful number, since it uses less digits than its factorization.

312547631397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873868.

The product of its digits is 2857680, while the sum is 51.

The spelling of 312547631397 in words is "three hundred twelve billion, five hundred forty-seven million, six hundred thirty-one thousand, three hundred ninety-seven".