231512801280 has 544 divisors, whose sum is σ = 782751817728. Its totient is φ = 58353254400.

The previous prime is 231512801257. The next prime is 231512801281. The reversal of 231512801280 is 82108215132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231512801281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2163670987 + ... + 2163671093.

Almost surely, 2^231512801280 is an apocalyptic number.

231512801280 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 231512801280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391375908864).

231512801280 is an abundant number, since it is smaller than the sum of its proper divisors (551239016448).

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

231512801280 is an equidigital number, since it uses as much as digits as its factorization.

231512801280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 231512801280 in words is "two hundred thirty-one billion, five hundred twelve million, eight hundred one thousand, two hundred eighty".