31233202011020 has 24 divisors (see below), whose sum is σ = 67115066648784. Its totient is φ = 12202739390016.

The previous prime is 31233202011019. The next prime is 31233202011103. The reversal of 31233202011020 is 2011020233213.

It is a super-2 number, since 2×31233202011020² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31233202010983 and 31233202011001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18158837519 + ... + 18158839238.

It is an arithmetic number, because the mean of its divisors is an integer number (2796461110366).

Almost surely, 2^{31233202011020} is an apocalyptic number.

It is an amenable number.

31233202011020 is an abundant number, since it is smaller than the sum of its proper divisors (35881864637764).

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

31233202011020 is a wasteful number, since it uses less digits than its factorization.

31233202011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36317676809 (or 36317676807 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31233202011020 its reverse (2011020233213), we get a palindrome (33244222244233).

The spelling of 31233202011020 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred two million, eleven thousand, twenty".