31020320321232 has 80 divisors (see below), whose sum is σ = 91221811573248. Its totient is φ = 8991397191040.

The previous prime is 31020320321227. The next prime is 31020320321257. The reversal of 31020320321232 is 23212302302013.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1277174958 + ... + 1277199245.

Almost surely, 2^{31020320321232} is an apocalyptic number.

It is an amenable number.

31020320321232 is an abundant number, since it is smaller than the sum of its proper divisors (60201491252016).

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

31020320321232 is a wasteful number, since it uses less digits than its factorization.

31020320321232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554374248 (or 2554374242 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31020320321232 its reverse (23212302302013), we get a palindrome (54232622623245).

The spelling of 31020320321232 in words is "thirty-one trillion, twenty billion, three hundred twenty million, three hundred twenty-one thousand, two hundred thirty-two".