312131123211002 has 8 divisors (see below), whose sum is σ = 468197483440512. Its totient is φ = 156065295397500.

The previous prime is 312131123210917. The next prime is 312131123211059. The reversal of 312131123211002 is 200112321131213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×312131123211002² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131635124 + ... + 133985327.

It is an arithmetic number, because the mean of its divisors is an integer number (58524685430064).

Almost surely, 2^{312131123211002} is an apocalyptic number.

312131123211002 is a deficient number, since it is larger than the sum of its proper divisors (156066360229510).

312131123211002 is a wasteful number, since it uses less digits than its factorization.

312131123211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266208004.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 312131123211002 its reverse (200112321131213), we get a palindrome (512243444342215).

The spelling of 312131123211002 in words is "three hundred twelve trillion, one hundred thirty-one billion, one hundred twenty-three million, two hundred eleven thousand, two".