231321054400 has 84 divisors (see below), whose sum is σ = 571557124600. Its totient is φ = 92144332800.

The previous prime is 231321054373. The next prime is 231321054431. The reversal of 231321054400 is 4450123132.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85651 + ... + 685549.

Almost surely, 2^231321054400 is an apocalyptic number.

231321054400 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 231321054400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285778562300).

231321054400 is an abundant number, since it is smaller than the sum of its proper divisors (340236070200).

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

231321054400 is a wasteful number, since it uses less digits than its factorization.

231321054400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600162 (or 600147 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 231321054400 its reverse (4450123132), we get a palindrome (235771177532).

The spelling of 231321054400 in words is "two hundred thirty-one billion, three hundred twenty-one million, fifty-four thousand, four hundred".