157186131 has 16 divisors (see below), whose sum is σ = 222455808. Its totient is φ = 98384000.

The previous prime is 157186123. The next prime is 157186153. The reversal of 157186131 is 131681751.

It is a cyclic number.

It is not a de Polignac number, because 157186131 - 2³ = 157186123 is a prime.

It is a super-2 number, since 2×157186131² = 49414959557498322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 157186092 and 157186101.

It is not an unprimeable number, because it can be changed into a prime (157186111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18406 + ... + 25556.

It is an arithmetic number, because the mean of its divisors is an integer number (13903488).

Almost surely, 2^157186131 is an apocalyptic number.

157186131 is a deficient number, since it is larger than the sum of its proper divisors (65269677).

157186131 is a wasteful number, since it uses less digits than its factorization.

157186131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602.

The product of its digits is 5040, while the sum is 33.

The square root of 157186131 is about 12537.3893215454. The cubic root of 157186131 is about 539.6821758028.

The spelling of 157186131 in words is "one hundred fifty-seven million, one hundred eighty-six thousand, one hundred thirty-one".