11431129 has 2 divisors, whose sum is σ = 11431130. Its totient is φ = 11431128.

The previous prime is 11431111. The next prime is 11431139. The reversal of 11431129 is 92113411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 855625 = 3252^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 11431129 - 2⁷ = 11431001 is a prime.

It is not a weakly prime, because it can be changed into another prime (11431109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715564 + 5715565.

It is an arithmetic number, because the mean of its divisors is an integer number (5715565).

Almost surely, 2^11431129 is an apocalyptic number.

It is an amenable number.

11431129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431129 is an equidigital number, since it uses as much as digits as its factorization.

11431129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 11431129 is about 3380.9952676690. The cubic root of 11431129 is about 225.2663775153.

The spelling of 11431129 in words is "eleven million, four hundred thirty-one thousand, one hundred twenty-nine".