131001237 has 6 divisors (see below), whose sum is σ = 189224022. Its totient is φ = 87334152.

The previous prime is 131001229. The next prime is 131001253. The reversal of 131001237 is 732100131.

It can be written as a sum of positive squares in only one way, i.e., 130096836 + 904401 = 11406^2 + 951^2 .

It is not a de Polignac number, because 131001237 - 2³ = 131001229 is a prime.

It is a super-2 number, since 2×131001237² = 34322648191060338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7277838 + ... + 7277855.

It is an arithmetic number, because the mean of its divisors is an integer number (31537337).

Almost surely, 2^131001237 is an apocalyptic number.

It is an amenable number.

131001237 is a deficient number, since it is larger than the sum of its proper divisors (58222785).

131001237 is a wasteful number, since it uses less digits than its factorization.

131001237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14555699 (or 14555696 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 131001237 is about 11445.5771807279. The cubic root of 131001237 is about 507.8769063878.

Adding to 131001237 its reverse (732100131), we get a palindrome (863101368).

The spelling of 131001237 in words is "one hundred thirty-one million, one thousand, two hundred thirty-seven".