11597431 has 2 divisors, whose sum is σ = 11597432. Its totient is φ = 11597430.

The previous prime is 11597423. The next prime is 11597447. The reversal of 11597431 is 13479511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11597431 - 2³ = 11597423 is a prime.

It is a super-2 number, since 2×11597431² = 269000811599522, which contains 22 as substring.

It is the 3406-th Hogben number.

It is a junction number, because it is equal to n+sod(n) for n = 11597393 and 11597402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11597471) by changing a digit.

It is a nontrivial repunit in base 3405.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5798715 + 5798716.

It is an arithmetic number, because the mean of its divisors is an integer number (5798716).

Almost surely, 2^11597431 is an apocalyptic number.

11597431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11597431 is an equidigital number, since it uses as much as digits as its factorization.

11597431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 11597431 is about 3405.5001101160. The cubic root of 11597431 is about 226.3535268914.

The spelling of 11597431 in words is "eleven million, five hundred ninety-seven thousand, four hundred thirty-one".