1131491502 has 24 divisors (see below), whose sum is σ = 2455941384. Its totient is φ = 376490544.

The previous prime is 1131491479. The next prime is 1131491503. The reversal of 1131491502 is 2051941311.

It is a happy number.

1131491502 is a `hidden beast` number, since 1 + 13 + 149 + 1 + 502 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131491503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45693 + ... + 65960.

It is an arithmetic number, because the mean of its divisors is an integer number (102330891).

Almost surely, 2^1131491502 is an apocalyptic number.

1131491502 is an abundant number, since it is smaller than the sum of its proper divisors (1324449882).

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

1131491502 is a wasteful number, since it uses less digits than its factorization.

1131491502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112224 (or 112221 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1131491502 is about 33637.6500665549. The cubic root of 1131491502 is about 1042.0385011126.

The spelling of 1131491502 in words is "one billion, one hundred thirty-one million, four hundred ninety-one thousand, five hundred two".