445135931 has 2 divisors, whose sum is σ = 445135932. Its totient is φ = 445135930.

The previous prime is 445135921. The next prime is 445135967. The reversal of 445135931 is 139531544.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445135931 is a prime.

It is a super-2 number, since 2×445135931² = 396291994134473522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445135891 and 445135900.

It is not a weakly prime, because it can be changed into another prime (445135921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222567965 + 222567966.

It is an arithmetic number, because the mean of its divisors is an integer number (222567966).

Almost surely, 2^445135931 is an apocalyptic number.

445135931 is a deficient number, since it is larger than the sum of its proper divisors (1).

445135931 is an equidigital number, since it uses as much as digits as its factorization.

445135931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 445135931 is about 21098.2447374183. The cubic root of 445135931 is about 763.5384005445.

The spelling of 445135931 in words is "four hundred forty-five million, one hundred thirty-five thousand, nine hundred thirty-one".