131216157 has 12 divisors (see below), whose sum is σ = 189968064. Its totient is φ = 87277320.

The previous prime is 131216153. The next prime is 131216161. The reversal of 131216157 is 751612131.

It is an interprime number because it is at equal distance from previous prime (131216153) and next prime (131216161).

It is not a de Polignac number, because 131216157 - 2² = 131216153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131216157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131216153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12469 + ... + 20442.

It is an arithmetic number, because the mean of its divisors is an integer number (15830672).

Almost surely, 2^131216157 is an apocalyptic number.

It is an amenable number.

131216157 is a deficient number, since it is larger than the sum of its proper divisors (58751907).

131216157 is a wasteful number, since it uses less digits than its factorization.

131216157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33360 (or 33357 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 131216157 is about 11454.9621125519. The cubic root of 131216157 is about 508.1544947771.

Adding to 131216157 its reverse (751612131), we get a palindrome (882828288).

The spelling of 131216157 in words is "one hundred thirty-one million, two hundred sixteen thousand, one hundred fifty-seven".