31023044020 has 24 divisors (see below), whose sum is σ = 66663473184. Its totient is φ = 12120630816.

The previous prime is 31023044011. The next prime is 31023044021. The reversal of 31023044020 is 2044032013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023044021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18035794 + ... + 18037513.

It is an arithmetic number, because the mean of its divisors is an integer number (2777644716).

Almost surely, 2^31023044020 is an apocalyptic number.

It is an amenable number.

31023044020 is an abundant number, since it is smaller than the sum of its proper divisors (35640429164).

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

31023044020 is a wasteful number, since it uses less digits than its factorization.

31023044020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36073359 (or 36073357 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 31023044020 its reverse (2044032013), we get a palindrome (33067076033).

The spelling of 31023044020 in words is "thirty-one billion, twenty-three million, forty-four thousand, twenty".