1151132431 has 2 divisors, whose sum is σ = 1151132432. Its totient is φ = 1151132430.

The previous prime is 1151132383. The next prime is 1151132447. The reversal of 1151132431 is 1342311511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1151132431 - 2²⁵ = 1117577999 is a prime.

It is a super-2 number, since 2×1151132431² = 2650211747399939522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151132491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575566215 + 575566216.

It is an arithmetic number, because the mean of its divisors is an integer number (575566216).

Almost surely, 2^1151132431 is an apocalyptic number.

1151132431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151132431 is an equidigital number, since it uses as much as digits as its factorization.

1151132431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 22.

The square root of 1151132431 is about 33928.3425914087. The cubic root of 1151132431 is about 1048.0333348831.

Adding to 1151132431 its reverse (1342311511), we get a palindrome (2493443942).

The spelling of 1151132431 in words is "one billion, one hundred fifty-one million, one hundred thirty-two thousand, four hundred thirty-one".