31175142 has 8 divisors (see below), whose sum is σ = 62350296. Its totient is φ = 10391712.

The previous prime is 31175107. The next prime is 31175149. The reversal of 31175142 is 24157113.

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

31175142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31175149) 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, 2597923 + ... + 2597934.

It is an arithmetic number, because the mean of its divisors is an integer number (7793787).

Almost surely, 2^31175142 is an apocalyptic number.

31175142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31175142 is a wasteful number, since it uses less digits than its factorization.

31175142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195862.

The product of its digits is 840, while the sum is 24.

The square root of 31175142 is about 5583.4704261776. The cubic root of 31175142 is about 314.7285542614.

The spelling of 31175142 in words is "thirty-one million, one hundred seventy-five thousand, one hundred forty-two".