149131237 has 4 divisors (see below), whose sum is σ = 149155776. Its totient is φ = 149106700.

The previous prime is 149131217. The next prime is 149131261. The reversal of 149131237 is 732131941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 149131237 - 2⁷ = 149131109 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149131199 and 149131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149131217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4362 + ... + 17812.

It is an arithmetic number, because the mean of its divisors is an integer number (37288944).

Almost surely, 2^149131237 is an apocalyptic number.

It is an amenable number.

149131237 is a deficient number, since it is larger than the sum of its proper divisors (24539).

149131237 is a wasteful number, since it uses less digits than its factorization.

149131237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24538.

The product of its digits is 4536, while the sum is 31.

The square root of 149131237 is about 12211.9301095281. The cubic root of 149131237 is about 530.3015217956.

The spelling of 149131237 in words is "one hundred forty-nine million, one hundred thirty-one thousand, two hundred thirty-seven".