72862931 has 2 divisors, whose sum is σ = 72862932. Its totient is φ = 72862930.

The previous prime is 72862883. The next prime is 72862949. The reversal of 72862931 is 13926827.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72862931 is a prime.

It is a super-2 number, since 2×72862931² = 10618013427821522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72862631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36431465 + 36431466.

It is an arithmetic number, because the mean of its divisors is an integer number (36431466).

Almost surely, 2^72862931 is an apocalyptic number.

72862931 is a deficient number, since it is larger than the sum of its proper divisors (1).

72862931 is an equidigital number, since it uses as much as digits as its factorization.

72862931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 72862931 is about 8535.9786199357. The cubic root of 72862931 is about 417.6721768242.

The spelling of 72862931 in words is "seventy-two million, eight hundred sixty-two thousand, nine hundred thirty-one".