231400554 has 128 divisors (see below), whose sum is σ = 605159424. Its totient is φ = 57240000.

The previous prime is 231400531. The next prime is 231400567. The reversal of 231400554 is 455004132.

231400554 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1532379 + ... + 1532529.

It is an arithmetic number, because the mean of its divisors is an integer number (4727808).

Almost surely, 2^231400554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231400554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302579712).

231400554 is an abundant number, since it is smaller than the sum of its proper divisors (373758870).

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

231400554 is a wasteful number, since it uses less digits than its factorization.

231400554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 231400554 is about 15211.8557053372. The cubic root of 231400554 is about 613.9336879794.

Adding to 231400554 its reverse (455004132), we get a palindrome (686404686).

The spelling of 231400554 in words is "two hundred thirty-one million, four hundred thousand, five hundred fifty-four".