312313311021 has 8 divisors (see below), whose sum is σ = 416552567040. Its totient is φ = 208141464512.

The previous prime is 312313310951. The next prime is 312313311041. The reversal of 312313311021 is 120113313213.

It is a happy number.

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 312313311021 - 2¹¹ = 312313308973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312313311041) 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, 16841565 + ... + 16860098.

It is an arithmetic number, because the mean of its divisors is an integer number (52069070880).

Almost surely, 2^312313311021 is an apocalyptic number.

It is an amenable number.

312313311021 is a deficient number, since it is larger than the sum of its proper divisors (104239256019).

312313311021 is a wasteful number, since it uses less digits than its factorization.

312313311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33704755.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 312313311021 its reverse (120113313213), we get a palindrome (432426624234).

The spelling of 312313311021 in words is "three hundred twelve billion, three hundred thirteen million, three hundred eleven thousand, twenty-one".