731160021000 has 256 divisors, whose sum is σ = 2416735077120. Its totient is φ = 183406080000.

The previous prime is 731160020951. The next prime is 731160021023. The reversal of 731160021000 is 120061137.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 145908495 + ... + 145913505.

It is an arithmetic number, because the mean of its divisors is an integer number (9440371395).

Almost surely, 2^731160021000 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 731160021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208367538560).

731160021000 is an abundant number, since it is smaller than the sum of its proper divisors (1685575056120).

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

731160021000 is a wasteful number, since it uses less digits than its factorization.

731160021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7913 (or 7899 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

Adding to 731160021000 its reverse (120061137), we get a palindrome (731280082137).

The spelling of 731160021000 in words is "seven hundred thirty-one billion, one hundred sixty million, twenty-one thousand".