1131256002 has 32 divisors (see below), whose sum is σ = 2301260544. Its totient is φ = 370682000.

The previous prime is 1131255971. The next prime is 1131256037. The reversal of 1131256002 is 2006521311.

It is a super-2 number, since 2×1131256002² = 2559480284122048008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131256002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77377 + ... + 90827.

It is an arithmetic number, because the mean of its divisors is an integer number (71914392).

Almost surely, 2^1131256002 is an apocalyptic number.

1131256002 is an abundant number, since it is smaller than the sum of its proper divisors (1170004542).

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

1131256002 is a wasteful number, since it uses less digits than its factorization.

1131256002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13694.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1131256002 is about 33634.1493425952. The cubic root of 1131256002 is about 1041.9662021180.

Adding to 1131256002 its reverse (2006521311), we get a palindrome (3137777313).

The spelling of 1131256002 in words is "one billion, one hundred thirty-one million, two hundred fifty-six thousand, two".