989163031 has 2 divisors, whose sum is σ = 989163032. Its totient is φ = 989163030.

The previous prime is 989163023. The next prime is 989163079. The reversal of 989163031 is 130361989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989163031 - 2³ = 989163023 is a prime.

It is a super-2 number, since 2×989163031² = 1956887003794213922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989163011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494581515 + 494581516.

It is an arithmetic number, because the mean of its divisors is an integer number (494581516).

Almost surely, 2^989163031 is an apocalyptic number.

989163031 is a deficient number, since it is larger than the sum of its proper divisors (1).

989163031 is an equidigital number, since it uses as much as digits as its factorization.

989163031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 989163031 is about 31450.9623223201. The cubic root of 989163031 is about 996.3745489892.

The spelling of 989163031 in words is "nine hundred eighty-nine million, one hundred sixty-three thousand, thirty-one".