1131513292 has 36 divisors (see below), whose sum is σ = 2480630880. Its totient is φ = 447630624.

The previous prime is 1131513241. The next prime is 1131513307. The reversal of 1131513292 is 2923151311.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1131513292.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219492 + ... + 224587.

Almost surely, 2^1131513292 is an apocalyptic number.

It is an amenable number.

1131513292 is an abundant number, since it is smaller than the sum of its proper divisors (1349117588).

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

1131513292 is a wasteful number, since it uses less digits than its factorization.

1131513292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444110 (or 444101 counting only the distinct ones).

The product of its digits is 1620, while the sum is 28.

The square root of 1131513292 is about 33637.9739580136. The cubic root of 1131513292 is about 1042.0451901813.

The spelling of 1131513292 in words is "one billion, one hundred thirty-one million, five hundred thirteen thousand, two hundred ninety-two".