31425902 has 8 divisors (see below), whose sum is σ = 47162736. Its totient is φ = 15704992.

The previous prime is 31425883. The next prime is 31425907. The reversal of 31425902 is 20952413.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425907) 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, 5078 + ... + 9414.

It is an arithmetic number, because the mean of its divisors is an integer number (5895342).

Almost surely, 2^31425902 is an apocalyptic number.

31425902 is a deficient number, since it is larger than the sum of its proper divisors (15736834).

31425902 is a wasteful number, since it uses less digits than its factorization.

31425902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 31425902 is about 5605.8810190727. The cubic root of 31425902 is about 315.5701507407.

The spelling of 31425902 in words is "thirty-one million, four hundred twenty-five thousand, nine hundred two".