156534131 has 4 divisors (see below), whose sum is σ = 168575232. Its totient is φ = 144493032.

The previous prime is 156534107. The next prime is 156534149. The reversal of 156534131 is 131435651.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 156534131 - 2¹⁰ = 156533107 is a prime.

It is a super-2 number, since 2×156534131² = 49005868335850322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156534094 and 156534103.

It is not an unprimeable number, because it can be changed into a prime (156534101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6020531 + ... + 6020556.

It is an arithmetic number, because the mean of its divisors is an integer number (42143808).

Almost surely, 2^156534131 is an apocalyptic number.

156534131 is a deficient number, since it is larger than the sum of its proper divisors (12041101).

156534131 is a wasteful number, since it uses less digits than its factorization.

156534131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12041100.

The product of its digits is 5400, while the sum is 29.

The square root of 156534131 is about 12511.3600779452. The cubic root of 156534131 is about 538.9349503800.

Adding to 156534131 its reverse (131435651), we get a palindrome (287969782).

The spelling of 156534131 in words is "one hundred fifty-six million, five hundred thirty-four thousand, one hundred thirty-one".