1131253256 has 32 divisors (see below), whose sum is σ = 2465208000. Its totient is φ = 476604096.

The previous prime is 1131253243. The next prime is 1131253261. The reversal of 1131253256 is 6523521311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167891 + ... + 174498.

It is an arithmetic number, because the mean of its divisors is an integer number (77037750).

Almost surely, 2^1131253256 is an apocalyptic number.

It is an amenable number.

1131253256 is an abundant number, since it is smaller than the sum of its proper divisors (1333954744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131253256 is a wasteful number, since it uses less digits than its factorization.

1131253256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342461 (or 342457 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 1131253256 is about 33634.1085209643. The cubic root of 1131253256 is about 1041.9653590310.

Adding to 1131253256 its reverse (6523521311), we get a palindrome (7654774567).

The spelling of 1131253256 in words is "one billion, one hundred thirty-one million, two hundred fifty-three thousand, two hundred fifty-six".