31332021213028 has 12 divisors (see below), whose sum is σ = 55070473967740. Its totient is φ = 15597600079392.

The previous prime is 31332021212971. The next prime is 31332021213029. The reversal of 31332021213028 is 82031212023313.

It can be written as a sum of positive squares in 2 ways, for example, as 21986270858304 + 9345750354724 = 4688952^2 + 3057082^2 .

It is not an unprimeable number, because it can be changed into a prime (31332021213029) 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, 17102630751 + ... + 17102632582.

Almost surely, 2^{31332021213028} is an apocalyptic number.

It is an amenable number.

31332021213028 is a deficient number, since it is larger than the sum of its proper divisors (23738452754712).

31332021213028 is a wasteful number, since it uses less digits than its factorization.

31332021213028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34205263566 (or 34205263564 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 31332021213028 in words is "thirty-one trillion, three hundred thirty-two billion, twenty-one million, two hundred thirteen thousand, twenty-eight".