31023123133230 has 128 divisors (see below), whose sum is σ = 84314243433600. Its totient is φ = 8114333939712.

The previous prime is 31023123133217. The next prime is 31023123133237. The reversal of 31023123133230 is 3233132132013.

31023123133230 is a `hidden beast` number, since 3 + 1 + 0 + 2 + 312 + 313 + 3 + 2 + 30 = 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 = 31023123133194 and 31023123133203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023123133237) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48176742 + ... + 48816438.

It is an arithmetic number, because the mean of its divisors is an integer number (658705026825).

Almost surely, 2^{31023123133230} is an apocalyptic number.

31023123133230 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 31023123133230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42157121716800).

31023123133230 is an abundant number, since it is smaller than the sum of its proper divisors (53291120300370).

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

31023123133230 is a wasteful number, since it uses less digits than its factorization.

31023123133230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643155 (or 643149 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 31023123133230 its reverse (3233132132013), we get a palindrome (34256255265243).

The spelling of 31023123133230 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, one hundred thirty-three thousand, two hundred thirty".