231223212320 has 48 divisors (see below), whose sum is σ = 546653068920. Its totient is φ = 92423553024.

The previous prime is 231223212317. The next prime is 231223212343. The reversal of 231223212320 is 23212322132.

It can be written as a sum of positive squares in 4 ways, for example, as 142101857296 + 89121355024 = 376964^2 + 298532^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287387 + ... + 738266.

Almost surely, 2^231223212320 is an apocalyptic number.

231223212320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231223212320 is an abundant number, since it is smaller than the sum of its proper divisors (315429856600).

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

231223212320 is a wasteful number, since it uses less digits than its factorization.

231223212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027077 (or 1027069 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 231223212320 its reverse (23212322132), we get a palindrome (254435534452).

The spelling of 231223212320 in words is "two hundred thirty-one billion, two hundred twenty-three million, two hundred twelve thousand, three hundred twenty".