31240002 has 32 divisors (see below), whose sum is σ = 65733120. Its totient is φ = 9884160.

The previous prime is 31239977. The next prime is 31240019. The reversal of 31240002 is 20004213.

It is a self number, because there is not a number n which added to its sum of digits gives 31240002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8274 + ... + 11442.

It is an arithmetic number, because the mean of its divisors is an integer number (2054160).

Almost surely, 2^31240002 is an apocalyptic number.

31240002 is an abundant number, since it is smaller than the sum of its proper divisors (34493118).

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

31240002 is a wasteful number, since it uses less digits than its factorization.

31240002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 31240002 is about 5589.2756239069. The cubic root of 31240002 is about 314.9466677157.

Adding to 31240002 its reverse (20004213), we get a palindrome (51244215).

The spelling of 31240002 in words is "thirty-one million, two hundred forty thousand, two".