231030023120 has 320 divisors, whose sum is σ = 626667015744. Its totient is φ = 78440693760.

The previous prime is 231030023113. The next prime is 231030023131. The reversal of 231030023120 is 21320030132.

It can be written as a sum of positive squares in 32 ways, for example, as 75942131776 + 155087891344 = 275576^2 + 393812^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 349515590 + ... + 349516250.

Almost surely, 2^231030023120 is an apocalyptic number.

231030023120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231030023120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313333507872).

231030023120 is an abundant number, since it is smaller than the sum of its proper divisors (395636992624).

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

231030023120 is a wasteful number, since it uses less digits than its factorization.

231030023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 231030023120 its reverse (21320030132), we get a palindrome (252350053252).

The spelling of 231030023120 in words is "two hundred thirty-one billion, thirty million, twenty-three thousand, one hundred twenty".