11291431 has 2 divisors, whose sum is σ = 11291432. Its totient is φ = 11291430.

The previous prime is 11291407. The next prime is 11291437. The reversal of 11291431 is 13419211.

11291431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11291431 - 2²¹ = 9194279 is a prime.

It is a super-2 number, since 2×11291431² = 254992828055522, 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 (11291437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5645715 + 5645716.

It is an arithmetic number, because the mean of its divisors is an integer number (5645716).

Almost surely, 2^11291431 is an apocalyptic number.

11291431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11291431 is an equidigital number, since it uses as much as digits as its factorization.

11291431 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 11291431 is about 3360.2724591914. The cubic root of 11291431 is about 224.3449656547.

The spelling of 11291431 in words is "eleven million, two hundred ninety-one thousand, four hundred thirty-one".