31312213321230 has 160 divisors (see below), whose sum is σ = 86255332954560. Its totient is φ = 8145631019520.

The previous prime is 31312213321223. The next prime is 31312213321241. The reversal of 31312213321230 is 3212331221313.

31312213321230 is a `hidden beast` number, since 3 + 1 + 312 + 2 + 1 + 3 + 321 + 23 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31312213321194 and 31312213321203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 548567452 + ... + 548624528.

It is an arithmetic number, because the mean of its divisors is an integer number (539095830966).

Almost surely, 2^{31312213321230} is an apocalyptic number.

31312213321230 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 31312213321230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43127666477280).

31312213321230 is an abundant number, since it is smaller than the sum of its proper divisors (54943119633330).

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

31312213321230 is a wasteful number, since it uses less digits than its factorization.

31312213321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73656 (or 73647 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31312213321230 its reverse (3212331221313), we get a palindrome (34524544542543).

The spelling of 31312213321230 in words is "thirty-one trillion, three hundred twelve billion, two hundred thirteen million, three hundred twenty-one thousand, two hundred thirty".