1002989331 has 32 divisors (see below), whose sum is σ = 1566216000. Its totient is φ = 633394944.

The previous prime is 1002989311. The next prime is 1002989363. The reversal of 1002989331 is 1339892001.

It is not a de Polignac number, because 1002989331 - 2¹¹ = 1002987283 is a prime.

It is a super-2 number, since 2×1002989331² = 2011975196199655122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1002989311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29415 + ... + 53583.

It is an arithmetic number, because the mean of its divisors is an integer number (48944250).

Almost surely, 2^1002989331 is an apocalyptic number.

1002989331 is a deficient number, since it is larger than the sum of its proper divisors (563226669).

1002989331 is a wasteful number, since it uses less digits than its factorization.

1002989331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24260 (or 24254 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1002989331 is about 31670.0068045462. The cubic root of 1002989331 is about 1000.9954524124.

The spelling of 1002989331 in words is "one billion, two million, nine hundred eighty-nine thousand, three hundred thirty-one".