31230122 has 64 divisors (see below), whose sum is σ = 63037440. Its totient is φ = 11232000.

The previous prime is 31230079. The next prime is 31230163. The reversal of 31230122 is 22103213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 31230097 and 31230106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206747 + ... + 206897.

It is an arithmetic number, because the mean of its divisors is an integer number (984960).

Almost surely, 2^31230122 is an apocalyptic number.

31230122 is an abundant number, since it is smaller than the sum of its proper divisors (31807318).

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

31230122 is a wasteful number, since it uses less digits than its factorization.

31230122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31230122 is about 5588.3917185537. The cubic root of 31230122 is about 314.9134624130.

Adding to 31230122 its reverse (22103213), we get a palindrome (53333335).

The spelling of 31230122 in words is "thirty-one million, two hundred thirty thousand, one hundred twenty-two".