43315204931 has 2 divisors, whose sum is σ = 43315204932. Its totient is φ = 43315204930.

The previous prime is 43315204847. The next prime is 43315204957. The reversal of 43315204931 is 13940251334.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43315204931 is a prime.

It is a super-2 number, since 2×43315204931² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43315204891 and 43315204900.

It is not a weakly prime, because it can be changed into another prime (43315204991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21657602465 + 21657602466.

It is an arithmetic number, because the mean of its divisors is an integer number (21657602466).

Almost surely, 2^43315204931 is an apocalyptic number.

43315204931 is a deficient number, since it is larger than the sum of its proper divisors (1).

43315204931 is an equidigital number, since it uses as much as digits as its factorization.

43315204931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 43315204931 in words is "forty-three billion, three hundred fifteen million, two hundred four thousand, nine hundred thirty-one".