31004123000 has 64 divisors (see below), whose sum is σ = 74890033920. Its totient is φ = 12001584000.

The previous prime is 31004122999. The next prime is 31004123021. The reversal of 31004123000 is 32140013.

It is a super-2 number, since 2×31004123000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469067 + ... + 531066.

It is an arithmetic number, because the mean of its divisors is an integer number (1170156780).

Almost surely, 2^31004123000 is an apocalyptic number.

It is an amenable number.

31004123000 is an abundant number, since it is smaller than the sum of its proper divisors (43885910920).

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

31004123000 is a wasteful number, since it uses less digits than its factorization.

31004123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000185 (or 1000171 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31004123000 its reverse (32140013), we get a palindrome (31036263013).

The spelling of 31004123000 in words is "thirty-one billion, four million, one hundred twenty-three thousand".