31428122 has 16 divisors (see below), whose sum is σ = 51514272. Its totient is φ = 14261520.

The previous prime is 31428107. The next prime is 31428139. The reversal of 31428122 is 22182413.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23393 + ... + 24699.

It is an arithmetic number, because the mean of its divisors is an integer number (3219642).

Almost surely, 2^31428122 is an apocalyptic number.

31428122 is a deficient number, since it is larger than the sum of its proper divisors (20086150).

31428122 is a wasteful number, since it uses less digits than its factorization.

31428122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413.

The product of its digits is 768, while the sum is 23.

The square root of 31428122 is about 5606.0790219190. The cubic root of 31428122 is about 315.5775814395.

The spelling of 31428122 in words is "thirty-one million, four hundred twenty-eight thousand, one hundred twenty-two".