31747142 has 8 divisors (see below), whose sum is σ = 54423696. Its totient is φ = 13605912.

The previous prime is 31747139. The next prime is 31747151. The reversal of 31747142 is 24174713.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133813 + ... + 1133840.

It is an arithmetic number, because the mean of its divisors is an integer number (6802962).

Almost surely, 2^31747142 is an apocalyptic number.

31747142 is a deficient number, since it is larger than the sum of its proper divisors (22676554).

31747142 is a wasteful number, since it uses less digits than its factorization.

31747142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267662.

The product of its digits is 4704, while the sum is 29.

The square root of 31747142 is about 5634.4602225945. The cubic root of 31747142 is about 316.6417750825.

The spelling of 31747142 in words is "thirty-one million, seven hundred forty-seven thousand, one hundred forty-two".