11636431 has 2 divisors, whose sum is σ = 11636432. Its totient is φ = 11636430.

The previous prime is 11636423. The next prime is 11636441. The reversal of 11636431 is 13463611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11636431 - 2³ = 11636423 is a prime.

It is a super-2 number, since 2×11636431² = 270813052835522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11636396 and 11636405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11636441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5818215 + 5818216.

It is an arithmetic number, because the mean of its divisors is an integer number (5818216).

Almost surely, 2^11636431 is an apocalyptic number.

11636431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11636431 is an equidigital number, since it uses as much as digits as its factorization.

11636431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 11636431 is about 3411.2213355337. The cubic root of 11636431 is about 226.6069712560.

The spelling of 11636431 in words is "eleven million, six hundred thirty-six thousand, four hundred thirty-one".