231421034400 has 288 divisors, whose sum is σ = 758707689600. Its totient is φ = 61269196800.

The previous prime is 231421034371. The next prime is 231421034423. The reversal of 231421034400 is 4430124132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275829181 + ... + 275830019.

It is an arithmetic number, because the mean of its divisors is an integer number (2634401700).

Almost surely, 2^231421034400 is an apocalyptic number.

231421034400 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 231421034400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379353844800).

231421034400 is an abundant number, since it is smaller than the sum of its proper divisors (527286655200).

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

231421034400 is a wasteful number, since it uses less digits than its factorization.

231421034400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 231421034400 its reverse (4430124132), we get a palindrome (235851158532).

The spelling of 231421034400 in words is "two hundred thirty-one billion, four hundred twenty-one million, thirty-four thousand, four hundred".