31332031310020 has 96 divisors (see below), whose sum is σ = 78024772417536. Its totient is φ = 10342016409600.

The previous prime is 31332031310017. The next prime is 31332031310057. The reversal of 31332031310020 is 2001313023313.

It is a junction number, because it is equal to n+sod(n) for n = 31332031309973 and 31332031310000.

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, 17865391 + ... + 19540630.

It is an arithmetic number, because the mean of its divisors is an integer number (812758046016).

Almost surely, 2^{31332031310020} is an apocalyptic number.

It is an amenable number.

31332031310020 is an abundant number, since it is smaller than the sum of its proper divisors (46692741107516).

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

31332031310020 is a wasteful number, since it uses less digits than its factorization.

31332031310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37406261 (or 37406259 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31332031310020 its reverse (2001313023313), we get a palindrome (33333344333333).

The spelling of 31332031310020 in words is "thirty-one trillion, three hundred thirty-two billion, thirty-one million, three hundred ten thousand, twenty".