31130012022 has 32 divisors (see below), whose sum is σ = 62651698560. Its totient is φ = 10311544320.

The previous prime is 31130012021. The next prime is 31130012029. The reversal of 31130012022 is 22021003113.

It is a junction number, because it is equal to n+sod(n) for n = 31130011992 and 31130012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815638 + ... + 852950.

It is an arithmetic number, because the mean of its divisors is an integer number (1957865580).

Almost surely, 2^31130012022 is an apocalyptic number.

31130012022 is an abundant number, since it is smaller than the sum of its proper divisors (31521686538).

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

31130012022 is a wasteful number, since it uses less digits than its factorization.

31130012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38188.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31130012022 its reverse (22021003113), we get a palindrome (53151015135).

The spelling of 31130012022 in words is "thirty-one billion, one hundred thirty million, twelve thousand, twenty-two".