31324041020 has 24 divisors (see below), whose sum is σ = 66431782368. Its totient is φ = 12405560000.

The previous prime is 31324041019. The next prime is 31324041061. The reversal of 31324041020 is 2014042313.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31324040983 and 31324041001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7751456 + ... + 7755495.

It is an arithmetic number, because the mean of its divisors is an integer number (2767990932).

Almost surely, 2^31324041020 is an apocalyptic number.

It is an amenable number.

31324041020 is an abundant number, since it is smaller than the sum of its proper divisors (35107741348).

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

31324041020 is a wasteful number, since it uses less digits than its factorization.

31324041020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15507061 (or 15507059 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31324041020 its reverse (2014042313), we get a palindrome (33338083333).

The spelling of 31324041020 in words is "thirty-one billion, three hundred twenty-four million, forty-one thousand, twenty".