1130947731 has 32 divisors (see below), whose sum is σ = 1731723840. Its totient is φ = 728985600.

The previous prime is 1130947723. The next prime is 1130947733. The reversal of 1130947731 is 1377490311.

It is not a de Polignac number, because 1130947731 - 2³ = 1130947723 is a prime.

It is a super-2 number, since 2×1130947731² = 2558085540508096722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1130947733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120571 + ... + 129611.

It is an arithmetic number, because the mean of its divisors is an integer number (54116370).

Almost surely, 2^1130947731 is an apocalyptic number.

1130947731 is a deficient number, since it is larger than the sum of its proper divisors (600776109).

1130947731 is a wasteful number, since it uses less digits than its factorization.

1130947731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9204 (or 9198 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 1130947731 is about 33629.5663219138. The cubic root of 1130947731 is about 1041.8715471080.

The spelling of 1130947731 in words is "one billion, one hundred thirty million, nine hundred forty-seven thousand, seven hundred thirty-one".