31340360 has 32 divisors (see below), whose sum is σ = 71488440. Its totient is φ = 12363264.

The previous prime is 31340317. The next prime is 31340381. The reversal of 31340360 is 6304313.

It can be written as a sum of positive squares in 4 ways, for example, as 18992164 + 12348196 = 4358^2 + 3514^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 2447 + ... + 8286.

Almost surely, 2^31340360 is an apocalyptic number.

It is an amenable number.

31340360 is an abundant number, since it is smaller than the sum of its proper divisors (40148080).

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

31340360 is a wasteful number, since it uses less digits than its factorization.

31340360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10817 (or 10813 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 31340360 is about 5598.2461539307. The cubic root of 31340360 is about 315.2835609063.

Adding to 31340360 its reverse (6304313), we get a palindrome (37644673).

The spelling of 31340360 in words is "thirty-one million, three hundred forty thousand, three hundred sixty".