31375742 has 8 divisors (see below), whose sum is σ = 48211632. Its totient is φ = 15305200.

The previous prime is 31375739. The next prime is 31375781. The reversal of 31375742 is 24757313.

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

It is a junction number, because it is equal to n+sod(n) for n = 31375699 and 31375708.

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, 191234 + ... + 191397.

It is an arithmetic number, because the mean of its divisors is an integer number (6026454).

Almost surely, 2^31375742 is an apocalyptic number.

31375742 is a deficient number, since it is larger than the sum of its proper divisors (16835890).

31375742 is a wasteful number, since it uses less digits than its factorization.

31375742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382674.

The product of its digits is 17640, while the sum is 32.

The square root of 31375742 is about 5601.4053593719. The cubic root of 31375742 is about 315.4021637515.

The spelling of 31375742 in words is "thirty-one million, three hundred seventy-five thousand, seven hundred forty-two".