31042452 has 24 divisors (see below), whose sum is σ = 82780096. Its totient is φ = 8869248.

The previous prime is 31042421. The next prime is 31042457. The reversal of 31042452 is 25424013.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31042457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184693 + ... + 184860.

Almost surely, 2^31042452 is an apocalyptic number.

It is an amenable number.

31042452 is an abundant number, since it is smaller than the sum of its proper divisors (51737644).

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

31042452 is a wasteful number, since it uses less digits than its factorization.

31042452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369567 (or 369565 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 31042452 is about 5571.5753607036. The cubic root of 31042452 is about 314.2813954149.

Adding to 31042452 its reverse (25424013), we get a palindrome (56466465).

The spelling of 31042452 in words is "thirty-one million, forty-two thousand, four hundred fifty-two".