45223931 has 2 divisors, whose sum is σ = 45223932. Its totient is φ = 45223930.

The previous prime is 45223907. The next prime is 45223949. The reversal of 45223931 is 13932254.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45223931 is a prime.

It is a super-2 number, since 2×45223931² = 4090407870185522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45223894 and 45223903.

It is not a weakly prime, because it can be changed into another prime (45223231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22611965 + 22611966.

It is an arithmetic number, because the mean of its divisors is an integer number (22611966).

Almost surely, 2^45223931 is an apocalyptic number.

45223931 is a deficient number, since it is larger than the sum of its proper divisors (1).

45223931 is an equidigital number, since it uses as much as digits as its factorization.

45223931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 45223931 is about 6724.8740508652. The cubic root of 45223931 is about 356.2783535041.

The spelling of 45223931 in words is "forty-five million, two hundred twenty-three thousand, nine hundred thirty-one".