31234242 has 24 divisors (see below), whose sum is σ = 67645584. Its totient is φ = 9610224.

The previous prime is 31234241. The next prime is 31234279. The reversal of 31234242 is 24243213.

It is not an unprimeable number, because it can be changed into a prime (31234241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14388 + ... + 16415.

It is an arithmetic number, because the mean of its divisors is an integer number (2818566).

Almost surely, 2^31234242 is an apocalyptic number.

31234242 is an abundant number, since it is smaller than the sum of its proper divisors (36411342).

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

31234242 is a wasteful number, since it uses less digits than its factorization.

31234242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30834 (or 30821 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 31234242 is about 5588.7603276576. The cubic root of 31234242 is about 314.9273100098.

Adding to 31234242 its reverse (24243213), we get a palindrome (55477455).

The spelling of 31234242 in words is "thirty-one million, two hundred thirty-four thousand, two hundred forty-two".