31220323201332 has 48 divisors (see below), whose sum is σ = 80955778052800. Its totient is φ = 10404948765600.

The previous prime is 31220323201247. The next prime is 31220323201337. The reversal of 31220323201332 is 23310232302213.

31220323201332 is a `hidden beast` number, since 3 + 1 + 2 + 2 + 0 + 3 + 2 + 320 + 1 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31220323201296 and 31220323201305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220323201337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24737482 + ... + 25968897.

Almost surely, 2^{31220323201332} is an apocalyptic number.

It is an amenable number.

31220323201332 is an abundant number, since it is smaller than the sum of its proper divisors (49735454851468).

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

31220323201332 is a wasteful number, since it uses less digits than its factorization.

31220323201332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50712093 (or 50712085 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 31220323201332 its reverse (23310232302213), we get a palindrome (54530555503545).

The spelling of 31220323201332 in words is "thirty-one trillion, two hundred twenty billion, three hundred twenty-three million, two hundred one thousand, three hundred thirty-two".