31020130222 has 32 divisors (see below), whose sum is σ = 51342004224. Its totient is φ = 14006942400.

The previous prime is 31020130201. The next prime is 31020130223. The reversal of 31020130222 is 22203102013.

It is a junction number, because it is equal to n+sod(n) for n = 31020130196 and 31020130205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020130223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206818 + ... + 323749.

It is an arithmetic number, because the mean of its divisors is an integer number (1604437632).

Almost surely, 2^31020130222 is an apocalyptic number.

31020130222 is a deficient number, since it is larger than the sum of its proper divisors (20321874002).

31020130222 is a wasteful number, since it uses less digits than its factorization.

31020130222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530664.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31020130222 its reverse (22203102013), we get a palindrome (53223232235).

The spelling of 31020130222 in words is "thirty-one billion, twenty million, one hundred thirty thousand, two hundred twenty-two".