149117131 has 4 divisors (see below), whose sum is σ = 151644600. Its totient is φ = 146589664.

The previous prime is 149117113. The next prime is 149117147. The reversal of 149117131 is 131711941.

149117131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131711941 = 4931 ⋅26711.

It is a cyclic number.

It is not a de Polignac number, because 149117131 - 2⁹ = 149116619 is a prime.

It is a super-2 number, since 2×149117131² = 44471837515342322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149117131.

It is not an unprimeable number, because it can be changed into a prime (149117231) 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, 1263646 + ... + 1263763.

It is an arithmetic number, because the mean of its divisors is an integer number (37911150).

Almost surely, 2^149117131 is an apocalyptic number.

149117131 is a deficient number, since it is larger than the sum of its proper divisors (2527469).

149117131 is an equidigital number, since it uses as much as digits as its factorization.

149117131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527468.

The product of its digits is 756, while the sum is 28.

The square root of 149117131 is about 12211.3525458894. The cubic root of 149117131 is about 530.2848012451.

The spelling of 149117131 in words is "one hundred forty-nine million, one hundred seventeen thousand, one hundred thirty-one".