131233137 has 32 divisors (see below), whose sum is σ = 207667200. Its totient is φ = 72135360.

The previous prime is 131233121. The next prime is 131233139. The reversal of 131233137 is 731332131.

It is not a de Polignac number, because 131233137 - 2⁴ = 131233121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131233139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129043 + ... + 130055.

It is an arithmetic number, because the mean of its divisors is an integer number (6489600).

Almost surely, 2^131233137 is an apocalyptic number.

It is an amenable number.

131233137 is a deficient number, since it is larger than the sum of its proper divisors (76434063).

131233137 is a wasteful number, since it uses less digits than its factorization.

131233137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253.

The product of its digits is 1134, while the sum is 24.

The square root of 131233137 is about 11455.7032520924. The cubic root of 131233137 is about 508.1764130413.

Adding to 131233137 its reverse (731332131), we get a palindrome (862565268).

The spelling of 131233137 in words is "one hundred thirty-one million, two hundred thirty-three thousand, one hundred thirty-seven".