31420122 has 32 divisors (see below), whose sum is σ = 64152000. Its totient is φ = 10257408.

The previous prime is 31420099. The next prime is 31420133. The reversal of 31420122 is 22102413.

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, 69754 + ... + 70202.

It is an arithmetic number, because the mean of its divisors is an integer number (2004750).

Almost surely, 2^31420122 is an apocalyptic number.

31420122 is an abundant number, since it is smaller than the sum of its proper divisors (32731878).

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

31420122 is a wasteful number, since it uses less digits than its factorization.

31420122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 31420122 is about 5605.3654653377. The cubic root of 31420122 is about 315.5508025047.

Adding to 31420122 its reverse (22102413), we get a palindrome (53522535).

The spelling of 31420122 in words is "thirty-one million, four hundred twenty thousand, one hundred twenty-two".