1152306431 has 4 divisors (see below), whose sum is σ = 1153731600. Its totient is φ = 1150881264.

The previous prime is 1152306413. The next prime is 1152306437. The reversal of 1152306431 is 1346032511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1152306431 is a prime.

It is a super-2 number, since 2×1152306431² = 2655620221847915522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1152306431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152306437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711371 + ... + 712988.

It is an arithmetic number, because the mean of its divisors is an integer number (288432900).

Almost surely, 2^1152306431 is an apocalyptic number.

1152306431 is a deficient number, since it is larger than the sum of its proper divisors (1425169).

1152306431 is an equidigital number, since it uses as much as digits as its factorization.

1152306431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425168.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1152306431 is about 33945.6393517636. The cubic root of 1152306431 is about 1048.3894981015.

Adding to 1152306431 its reverse (1346032511), we get a palindrome (2498338942).

The spelling of 1152306431 in words is "one billion, one hundred fifty-two million, three hundred six thousand, four hundred thirty-one".