31132311323020 has 24 divisors (see below), whose sum is σ = 65381588470800. Its totient is φ = 12452213159232.

The previous prime is 31132311322997. The next prime is 31132311323033. The reversal of 31132311323020 is 2032311323113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44101690 + ... + 44802049.

It is an arithmetic number, because the mean of its divisors is an integer number (2724232852950).

Almost surely, 2^{31132311323020} is an apocalyptic number.

It is an amenable number.

31132311323020 is an abundant number, since it is smaller than the sum of its proper divisors (34249277147780).

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

31132311323020 is a wasteful number, since it uses less digits than its factorization.

31132311323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88921257 (or 88921255 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31132311323020 its reverse (2032311323113), we get a palindrome (33164622646133).

The spelling of 31132311323020 in words is "thirty-one trillion, one hundred thirty-two billion, three hundred eleven million, three hundred twenty-three thousand, twenty".