31130230122 has 64 divisors (see below), whose sum is σ = 69565858560. Its totient is φ = 10318758912.

The previous prime is 31130230111. The next prime is 31130230139. The reversal of 31130230122 is 22103203113.

31130230122 is a `hidden beast` number, since 311 + 3 + 0 + 230 + 122 = 666.

It is a super-2 number, since 2×31130230122² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31130230095 and 31130230104.

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, 9556318 + ... + 9559574.

It is an arithmetic number, because the mean of its divisors is an integer number (1086966540).

Almost surely, 2^31130230122 is an apocalyptic number.

31130230122 is an abundant number, since it is smaller than the sum of its proper divisors (38435628438).

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

31130230122 is a wasteful number, since it uses less digits than its factorization.

31130230122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204 (or 4198 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31130230122 its reverse (22103203113), we get a palindrome (53233433235).

The spelling of 31130230122 in words is "thirty-one billion, one hundred thirty million, two hundred thirty thousand, one hundred twenty-two".