1031989256 has 48 divisors (see below), whose sum is σ = 2108240640. Its totient is φ = 473027040.

The previous prime is 1031989253. The next prime is 1031989271. The reversal of 1031989256 is 6529891301.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1031989253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83765 + ... + 95291.

It is an arithmetic number, because the mean of its divisors is an integer number (43921680).

Almost surely, 2^1031989256 is an apocalyptic number.

It is an amenable number.

1031989256 is an abundant number, since it is smaller than the sum of its proper divisors (1076251384).

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

1031989256 is a wasteful number, since it uses less digits than its factorization.

1031989256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11602 (or 11579 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1031989256 is about 32124.5895849270. The cubic root of 1031989256 is about 1010.5513625169.

The spelling of 1031989256 in words is "one billion, thirty-one million, nine hundred eighty-nine thousand, two hundred fifty-six".