31140204 has 12 divisors (see below), whose sum is σ = 72660504. Its totient is φ = 10380064.

The previous prime is 31140191. The next prime is 31140233. The reversal of 31140204 is 40204113.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1297497 + ... + 1297520.

It is an arithmetic number, because the mean of its divisors is an integer number (6055042).

Almost surely, 2^31140204 is an apocalyptic number.

It is an amenable number.

31140204 is an abundant number, since it is smaller than the sum of its proper divisors (41520300).

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

31140204 is a wasteful number, since it uses less digits than its factorization.

31140204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595024 (or 2595022 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 31140204 is about 5580.3408498048. The cubic root of 31140204 is about 314.6109381543.

Adding to 31140204 its reverse (40204113), we get a palindrome (71344317).

The spelling of 31140204 in words is "thirty-one million, one hundred forty thousand, two hundred four".