131620156 has 12 divisors (see below), whose sum is σ = 230601168. Its totient is φ = 65734112.

The previous prime is 131620117. The next prime is 131620169. The reversal of 131620156 is 651026131.

It is a self number, because there is not a number n which added to its sum of digits gives 131620156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15001 + ... + 22096.

It is an arithmetic number, because the mean of its divisors is an integer number (19216764).

Almost surely, 2^131620156 is an apocalyptic number.

It is an amenable number.

131620156 is a deficient number, since it is larger than the sum of its proper divisors (98981012).

131620156 is a wasteful number, since it uses less digits than its factorization.

131620156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37988 (or 37986 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 131620156 is about 11472.5827955173. The cubic root of 131620156 is about 508.6754762889.

Adding to 131620156 its reverse (651026131), we get a palindrome (782646287).

The spelling of 131620156 in words is "one hundred thirty-one million, six hundred twenty thousand, one hundred fifty-six".