31145140149 has 8 divisors (see below), whose sum is σ = 41652313632. Its totient is φ = 20700696720.

The previous prime is 31145140141. The next prime is 31145140163. The reversal of 31145140149 is 94104154113.

It is a happy number.

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

It is not a de Polignac number, because 31145140149 - 2³ = 31145140141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31145140141) 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, 15681354 + ... + 15683339.

It is an arithmetic number, because the mean of its divisors is an integer number (5206539204).

Almost surely, 2^31145140149 is an apocalyptic number.

It is an amenable number.

31145140149 is a deficient number, since it is larger than the sum of its proper divisors (10507173483).

31145140149 is a wasteful number, since it uses less digits than its factorization.

31145140149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31365027.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 31145140149 in words is "thirty-one billion, one hundred forty-five million, one hundred forty thousand, one hundred forty-nine".