1157327631 has 12 divisors (see below), whose sum is σ = 1672613280. Its totient is φ = 771128160.

The previous prime is 1157327629. The next prime is 1157327659. The reversal of 1157327631 is 1367237511.

1157327631 is a `hidden beast` number, since 1 + 1 + 573 + 27 + 63 + 1 = 666.

It is not a de Polignac number, because 1157327631 - 2¹ = 1157327629 is a prime.

It is a super-2 number, since 2×1157327631² = 2678814490952144322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157327231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17526 + ... + 51203.

It is an arithmetic number, because the mean of its divisors is an integer number (139384440).

Almost surely, 2^1157327631 is an apocalyptic number.

1157327631 is a deficient number, since it is larger than the sum of its proper divisors (515285649).

1157327631 is a wasteful number, since it uses less digits than its factorization.

1157327631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70606 (or 70603 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 1157327631 is about 34019.5183828343. The cubic root of 1157327631 is about 1049.9100848175.

It can be divided in two parts, 11573 and 27631, that added together give a square (39204 = 198²).

The spelling of 1157327631 in words is "one billion, one hundred fifty-seven million, three hundred twenty-seven thousand, six hundred thirty-one".