31020320122230 has 64 divisors (see below), whose sum is σ = 75971432597760. Its totient is φ = 8103385919616.

The previous prime is 31020320122193. The next prime is 31020320122273. The reversal of 31020320122230 is 3222102302013.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31020320122197 and 31020320122206.

It is a congruent number.

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, 14148420 + ... + 16193159.

It is an arithmetic number, because the mean of its divisors is an integer number (1187053634340).

Almost surely, 2^{31020320122230} is an apocalyptic number.

31020320122230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31020320122230 is an abundant number, since it is smaller than the sum of its proper divisors (44951112475530).

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

31020320122230 is a wasteful number, since it uses less digits than its factorization.

31020320122230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30342285.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31020320122230 its reverse (3222102302013), we get a palindrome (34242422424243).

The spelling of 31020320122230 in words is "thirty-one trillion, twenty billion, three hundred twenty million, one hundred twenty-two thousand, two hundred thirty".