312331200031021 has 8 divisors (see below), whose sum is σ = 329982856515200. Its totient is φ = 294800860774080.

The previous prime is 312331200030979. The next prime is 312331200031069. The reversal of 312331200031021 is 120130002133213.

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

It is a cyclic number.

It is not a de Polignac number, because 312331200031021 - 2¹¹ = 312331200028973 is a prime.

It is a super-2 number, since 2×312331200031021² (a number of 30 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 = 312331200030983 and 312331200031001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312331200031121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30329301516 + ... + 30329311813.

It is an arithmetic number, because the mean of its divisors is an integer number (41247857064400).

Almost surely, 2^{312331200031021} is an apocalyptic number.

It is an amenable number.

312331200031021 is a deficient number, since it is larger than the sum of its proper divisors (17651656484179).

312331200031021 is a wasteful number, since it uses less digits than its factorization.

312331200031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60658613619.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 312331200031021 its reverse (120130002133213), we get a palindrome (432461202164234).

The spelling of 312331200031021 in words is "three hundred twelve trillion, three hundred thirty-one billion, two hundred million, thirty-one thousand, twenty-one".