231384400554 has 16 divisors (see below), whose sum is σ = 466301388960. Its totient is φ = 76539368880.

The previous prime is 231384400543. The next prime is 231384400603. The reversal of 231384400554 is 455004483132.

It is a Curzon number.

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, 147190309 + ... + 147191880.

It is an arithmetic number, because the mean of its divisors is an integer number (29143836810).

Almost surely, 2^231384400554 is an apocalyptic number.

231384400554 is an abundant number, since it is smaller than the sum of its proper divisors (234916988406).

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

231384400554 is a wasteful number, since it uses less digits than its factorization.

231384400554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294382325.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 231384400554 its reverse (455004483132), we get a palindrome (686388883686).

The spelling of 231384400554 in words is "two hundred thirty-one billion, three hundred eighty-four million, four hundred thousand, five hundred fifty-four".