981231164 has 12 divisors (see below), whose sum is σ = 1717527000. Its totient is φ = 490509168.

The previous prime is 981231133. The next prime is 981231169. The reversal of 981231164 is 461132189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981231169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3659 + ... + 44450.

It is an arithmetic number, because the mean of its divisors is an integer number (143127250).

Almost surely, 2^981231164 is an apocalyptic number.

It is an amenable number.

981231164 is a deficient number, since it is larger than the sum of its proper divisors (736295836).

981231164 is a wasteful number, since it uses less digits than its factorization.

981231164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53212 (or 53210 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 981231164 is about 31324.6095586202. The cubic root of 981231164 is about 993.7041670039.

The spelling of 981231164 in words is "nine hundred eighty-one million, two hundred thirty-one thousand, one hundred sixty-four".