231324231400 has 24 divisors (see below), whose sum is σ = 537828838470. Its totient is φ = 92529692480.

The previous prime is 231324231353. The next prime is 231324231421. The reversal of 231324231400 is 4132423132.

It can be written as a sum of positive squares in 3 ways, for example, as 192284004004 + 39040227396 = 438502^2 + 197586^2 .

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 5 ways as a sum of consecutive naturals, for example, 578310379 + ... + 578310778.

Almost surely, 2^231324231400 is an apocalyptic number.

231324231400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231324231400 is an abundant number, since it is smaller than the sum of its proper divisors (306504607070).

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

231324231400 is a wasteful number, since it uses less digits than its factorization.

231324231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156621173 (or 1156621164 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 231324231400 its reverse (4132423132), we get a palindrome (235456654532).

The spelling of 231324231400 in words is "two hundred thirty-one billion, three hundred twenty-four million, two hundred thirty-one thousand, four hundred".