1157131 has 2 divisors, whose sum is σ = 1157132. Its totient is φ = 1157130.

The previous prime is 1157111. The next prime is 1157159. The reversal of 1157131 is 1317511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1157131 - 2⁵ = 1157099 is a prime.

It is a super-2 number, since 2×1157131² = 2677904302322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1157099 and 1157108.

It is not a weakly prime, because it can be changed into another prime (1157111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578565 + 578566.

It is an arithmetic number, because the mean of its divisors is an integer number (578566).

2^1157131 is an apocalyptic number.

1157131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157131 is an equidigital number, since it uses as much as digits as its factorization.

1157131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105, while the sum is 19.

The square root of 1157131 is about 1075.7002370549. The cubic root of 1157131 is about 104.9850621229.

The spelling of 1157131 in words is "one million, one hundred fifty-seven thousand, one hundred thirty-one".