1151350431 has 32 divisors (see below), whose sum is σ = 1979942400. Its totient is φ = 577476480.

The previous prime is 1151350411. The next prime is 1151350433. The reversal of 1151350431 is 1340531511.

It is not a de Polignac number, because 1151350431 - 2⁹ = 1151349919 is a prime.

It is a super-2 number, since 2×1151350431² = 2651215629927771522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151350433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79236 + ... + 92633.

It is an arithmetic number, because the mean of its divisors is an integer number (61873200).

Almost surely, 2^1151350431 is an apocalyptic number.

1151350431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1151350431 is a deficient number, since it is larger than the sum of its proper divisors (828591969).

1151350431 is a wasteful number, since it uses less digits than its factorization.

1151350431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171919.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1151350431 is about 33931.5550925683. Note that the first 3 decimals coincide. The cubic root of 1151350431 is about 1048.0994891152.

Adding to 1151350431 its reverse (1340531511), we get a palindrome (2491881942).

It can be divided in two parts, 115 and 1350431, that added together give a triangular number (1350546 = T₁₆₄₃).

The spelling of 1151350431 in words is "one billion, one hundred fifty-one million, three hundred fifty thousand, four hundred thirty-one".