331013213312 has 32 divisors (see below), whose sum is σ = 663640683420. Its totient is φ = 164452414464.

The previous prime is 331013213309. The next prime is 331013213317. The reversal of 331013213312 is 213312310133.

It can be written as a sum of positive squares in 2 ways, for example, as 331011512896 + 1700416 = 575336^2 + 1304^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×331013213312² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331013213317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8215703 + ... + 8255894.

Almost surely, 2^331013213312 is an apocalyptic number.

331013213312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

331013213312 is an abundant number, since it is smaller than the sum of its proper divisors (332627470108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331013213312 is a wasteful number, since it uses less digits than its factorization.

331013213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16471768 (or 16471756 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 331013213312 its reverse (213312310133), we get a palindrome (544325523445).

The spelling of 331013213312 in words is "three hundred thirty-one billion, thirteen million, two hundred thirteen thousand, three hundred twelve".