31310342 has 16 divisors (see below), whose sum is σ = 53747232. Its totient is φ = 13400640.

The previous prime is 31310317. The next prime is 31310369. The reversal of 31310342 is 24301313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31310342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17648 + ... + 19340.

It is an arithmetic number, because the mean of its divisors is an integer number (3359202).

Almost surely, 2^31310342 is an apocalyptic number.

31310342 is a deficient number, since it is larger than the sum of its proper divisors (22436890).

31310342 is a wasteful number, since it uses less digits than its factorization.

31310342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 31310342 is about 5595.5644934180. The cubic root of 31310342 is about 315.1828685386.

Adding to 31310342 its reverse (24301313), we get a palindrome (55611655).

The spelling of 31310342 in words is "thirty-one million, three hundred ten thousand, three hundred forty-two".