431425517 has 2 divisors, whose sum is σ = 431425518. Its totient is φ = 431425516.

The previous prime is 431425487. The next prime is 431425567. The reversal of 431425517 is 715524134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 363626761 + 67798756 = 19069^2 + 8234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431425517 is a prime.

It is a super-2 number, since 2×431425517² = 372255953437434578, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431425567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215712758 + 215712759.

It is an arithmetic number, because the mean of its divisors is an integer number (215712759).

Almost surely, 2^431425517 is an apocalyptic number.

It is an amenable number.

431425517 is a deficient number, since it is larger than the sum of its proper divisors (1).

431425517 is an equidigital number, since it uses as much as digits as its factorization.

431425517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 32.

The square root of 431425517 is about 20770.7851801515. The cubic root of 431425517 is about 755.6173872032.

The spelling of 431425517 in words is "four hundred thirty-one million, four hundred twenty-five thousand, five hundred seventeen".