31450242 has 8 divisors (see below), whose sum is σ = 62900496. Its totient is φ = 10483412.

The previous prime is 31450219. The next prime is 31450247. The reversal of 31450242 is 24205413.

It is a sphenic number, since it is the product of 3 distinct primes.

31450242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31450247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2620848 + ... + 2620859.

It is an arithmetic number, because the mean of its divisors is an integer number (7862562).

Almost surely, 2^31450242 is an apocalyptic number.

31450242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31450242 is a wasteful number, since it uses less digits than its factorization.

31450242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241712.

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

The square root of 31450242 is about 5608.0515332868. The cubic root of 31450242 is about 315.6516015484.

Adding to 31450242 its reverse (24205413), we get a palindrome (55655655).

The spelling of 31450242 in words is "thirty-one million, four hundred fifty thousand, two hundred forty-two".