31020023000 has 64 divisors (see below), whose sum is σ = 74548749600. Its totient is φ = 12072643200.

The previous prime is 31020022981. The next prime is 31020023017. The reversal of 31020023000 is 32002013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382190 + ... + 456189.

Almost surely, 2^31020023000 is an apocalyptic number.

It is an amenable number.

31020023000 is an abundant number, since it is smaller than the sum of its proper divisors (43528726600).

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

31020023000 is a wasteful number, since it uses less digits than its factorization.

31020023000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838437 (or 838423 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 31020023000 its reverse (32002013), we get a palindrome (31052025013).

The spelling of 31020023000 in words is "thirty-one billion, twenty million, twenty-three thousand".