1147039731 has 16 divisors (see below), whose sum is σ = 1699840800. Its totient is φ = 764457984.

The previous prime is 1147039681. The next prime is 1147039757. The reversal of 1147039731 is 1379307411.

It is not a de Polignac number, because 1147039731 - 2⁷ = 1147039603 is a prime.

It is a super-2 number, since 2×1147039731² = 2631400288985104722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1147039771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160915 + ... + 167891.

It is an arithmetic number, because the mean of its divisors is an integer number (106240050).

Almost surely, 2^1147039731 is an apocalyptic number.

1147039731 is a deficient number, since it is larger than the sum of its proper divisors (552801069).

1147039731 is an equidigital number, since it uses as much as digits as its factorization.

1147039731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13075 (or 13069 counting only the distinct ones).

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

The square root of 1147039731 is about 33867.9750058961. The cubic root of 1147039731 is about 1046.7898117490.

The spelling of 1147039731 in words is "one billion, one hundred forty-seven million, thirty-nine thousand, seven hundred thirty-one".