231401320404 has 192 divisors, whose sum is σ = 582966720000. Its totient is φ = 71300669440.

The previous prime is 231401320387. The next prime is 231401320459. The reversal of 231401320404 is 404023104132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189207337 + ... + 189208559.

It is an arithmetic number, because the mean of its divisors is an integer number (3036285000).

Almost surely, 2^231401320404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231401320404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291483360000).

231401320404 is an abundant number, since it is smaller than the sum of its proper divisors (351565399596).

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

231401320404 is a wasteful number, since it uses less digits than its factorization.

231401320404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 1536 counting only the distinct ones).

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

Adding to 231401320404 its reverse (404023104132), we get a palindrome (635424424536).

The spelling of 231401320404 in words is "two hundred thirty-one billion, four hundred one million, three hundred twenty thousand, four hundred four".