31232033020220 has 96 divisors (see below), whose sum is σ = 68824575106560. Its totient is φ = 11882320116480.

The previous prime is 31232033020219. The next prime is 31232033020249. The reversal of 31232033020220 is 2202033023213.

It is a super-2 number, since 2×31232033020220² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1125911111 + ... + 1125938849.

It is an arithmetic number, because the mean of its divisors is an integer number (716922657360).

Almost surely, 2^{31232033020220} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31232033020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34412287553280).

31232033020220 is an abundant number, since it is smaller than the sum of its proper divisors (37592542086340).

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

31232033020220 is a wasteful number, since it uses less digits than its factorization.

31232033020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41475 (or 41473 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 31232033020220 its reverse (2202033023213), we get a palindrome (33434066043433).

The spelling of 31232033020220 in words is "thirty-one trillion, two hundred thirty-two billion, thirty-three million, twenty thousand, two hundred twenty".