156131 has 2 divisors, whose sum is σ = 156132. Its totient is φ = 156130.

The previous prime is 156127. The next prime is 156139. The reversal of 156131 is 131651.

156131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156131 - 2² = 156127 is a prime.

It is a super-2 number, since 2×156131² = 48753778322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78065 + 78066.

It is an arithmetic number, because the mean of its divisors is an integer number (78066).

2¹⁵⁶¹³¹ is an apocalyptic number.

156131 is a deficient number, since it is larger than the sum of its proper divisors (1).

156131 is an equidigital number, since it uses as much as digits as its factorization.

156131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 17.

The square root of 156131 is about 395.1341544337. The cubic root of 156131 is about 53.8471902993.

Adding to 156131 its reverse (131651), we get a palindrome (287782).

The spelling of 156131 in words is "one hundred fifty-six thousand, one hundred thirty-one".