31004320000 has 180 divisors, whose sum is σ = 78100512336. Its totient is φ = 12279040000.

The previous prime is 31004319911. The next prime is 31004320019. The reversal of 31004320000 is 2340013.

It is a super-2 number, since 2×31004320000² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17119095 + ... + 17120905.

Almost surely, 2^31004320000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31004320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39050256168).

31004320000 is an abundant number, since it is smaller than the sum of its proper divisors (47096192336).

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

31004320000 is an equidigital number, since it uses as much as digits as its factorization.

31004320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954 (or 1925 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 31004320000 its reverse (2340013), we get a palindrome (31006660013).

The spelling of 31004320000 in words is "thirty-one billion, four million, three hundred twenty thousand".