811483931 has 16 divisors (see below), whose sum is σ = 860848128. Its totient is φ = 763694400.

The previous prime is 811483919. The next prime is 811483957. The reversal of 811483931 is 139384118.

It is a cyclic number.

It is not a de Polignac number, because 811483931 - 2⁶ = 811483867 is a prime.

It is a super-2 number, since 2×811483931² = 1317012340542425522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811483031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485960 + ... + 487626.

It is an arithmetic number, because the mean of its divisors is an integer number (53803008).

Almost surely, 2^811483931 is an apocalyptic number.

811483931 is a deficient number, since it is larger than the sum of its proper divisors (49364197).

811483931 is a wasteful number, since it uses less digits than its factorization.

811483931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122.

The product of its digits is 20736, while the sum is 38.

The square root of 811483931 is about 28486.5570225677. The cubic root of 811483931 is about 932.7386537302.

The spelling of 811483931 in words is "eight hundred eleven million, four hundred eighty-three thousand, nine hundred thirty-one".