1147131731 has 2 divisors, whose sum is σ = 1147131732. Its totient is φ = 1147131730.

The previous prime is 1147131697. The next prime is 1147131767. The reversal of 1147131731 is 1371317411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1147131731 - 2¹⁸ = 1146869587 is a prime.

It is a super-2 number, since 2×1147131731² = 2631822416534112722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1147131694 and 1147131703.

It is not a weakly prime, because it can be changed into another prime (1147131031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573565865 + 573565866.

It is an arithmetic number, because the mean of its divisors is an integer number (573565866).

Almost surely, 2^1147131731 is an apocalyptic number.

1147131731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147131731 is an equidigital number, since it uses as much as digits as its factorization.

1147131731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 29.

The square root of 1147131731 is about 33869.3331939086. Note that the first 3 decimals coincide. The cubic root of 1147131731 is about 1046.8177974370.

The spelling of 1147131731 in words is "one billion, one hundred forty-seven million, one hundred thirty-one thousand, seven hundred thirty-one".