149312131 has 8 divisors (see below), whose sum is σ = 153626400. Its totient is φ = 145012608.

The previous prime is 149312129. The next prime is 149312147. The reversal of 149312131 is 131213941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149312131 - 2¹ = 149312129 is a prime.

It is a super-2 number, since 2×149312131² = 44588224927522322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149312096 and 149312105.

It is not an unprimeable number, because it can be changed into a prime (149312101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18795 + ... + 25531.

It is an arithmetic number, because the mean of its divisors is an integer number (19203300).

Almost surely, 2^149312131 is an apocalyptic number.

149312131 is a deficient number, since it is larger than the sum of its proper divisors (4314269).

149312131 is an equidigital number, since it uses as much as digits as its factorization.

149312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373.

The product of its digits is 648, while the sum is 25.

The square root of 149312131 is about 12219.3343108371. The cubic root of 149312131 is about 530.5158511450.

The spelling of 149312131 in words is "one hundred forty-nine million, three hundred twelve thousand, one hundred thirty-one".