331031030312 has 8 divisors (see below), whose sum is σ = 620683181850. Its totient is φ = 165515515152.

The previous prime is 331031030303. The next prime is 331031030357. The reversal of 331031030312 is 213030130133.

It can be written as a sum of positive squares in only one way, i.e., 188837178916 + 142193851396 = 434554^2 + 377086^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20689439387 + ... + 20689439402.

Almost surely, 2^331031030312 is an apocalyptic number.

It is an amenable number.

331031030312 is a deficient number, since it is larger than the sum of its proper divisors (289652151538).

331031030312 is a wasteful number, since it uses less digits than its factorization.

331031030312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41378878795 (or 41378878791 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 331031030312 its reverse (213030130133), we get a palindrome (544061160445).

The spelling of 331031030312 in words is "three hundred thirty-one billion, thirty-one million, thirty thousand, three hundred twelve".