157531113 has 6 divisors (see below), whose sum is σ = 227544954. Its totient is φ = 105020736.

The previous prime is 157531093. The next prime is 157531133. The reversal of 157531113 is 311135751.

157531113 is a `hidden beast` number, since 15 + 7 + 531 + 113 = 666.

It is an interprime number because it is at equal distance from previous prime (157531093) and next prime (157531133).

It can be written as a sum of positive squares in only one way, i.e., 98962704 + 58568409 = 9948^2 + 7653^2 .

It is not a de Polignac number, because 157531113 - 2⁵ = 157531081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157531133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8751720 + ... + 8751737.

It is an arithmetic number, because the mean of its divisors is an integer number (37924159).

Almost surely, 2^157531113 is an apocalyptic number.

It is an amenable number.

157531113 is a deficient number, since it is larger than the sum of its proper divisors (70013841).

157531113 is a wasteful number, since it uses less digits than its factorization.

157531113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17503463 (or 17503460 counting only the distinct ones).

The product of its digits is 1575, while the sum is 27.

The square root of 157531113 is about 12551.1399083908. The cubic root of 157531113 is about 540.0767072102.

Adding to 157531113 its reverse (311135751), we get a palindrome (468666864).

The spelling of 157531113 in words is "one hundred fifty-seven million, five hundred thirty-one thousand, one hundred thirteen".