31312022020230 has 256 divisors, whose sum is σ = 88734526341120. Its totient is φ = 6922954096128.

The previous prime is 31312022020211. The next prime is 31312022020241. The reversal of 31312022020230 is 3202022021313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 31312022020197 and 31312022020206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 638748661 + ... + 638797679.

It is an arithmetic number, because the mean of its divisors is an integer number (346619243520).

Almost surely, 2^{31312022020230} is an apocalyptic number.

31312022020230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31312022020230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44367263170560).

31312022020230 is an abundant number, since it is smaller than the sum of its proper divisors (57422504320890).

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

31312022020230 is a wasteful number, since it uses less digits than its factorization.

31312022020230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49763.

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

Adding to 31312022020230 its reverse (3202022021313), we get a palindrome (34514044041543).

The spelling of 31312022020230 in words is "thirty-one trillion, three hundred twelve billion, twenty-two million, twenty thousand, two hundred thirty".