231554402401 has 9 divisors (see below), whose sum is σ = 269363121201. Its totient is φ = 198472314852.

The previous prime is 231554402393. The next prime is 231554402437. The reversal of 231554402401 is 104204455132.

The square root of 231554402401 is 481201.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 231554402401 - 2³ = 231554402393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231554402461) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3334036 + ... + 3402778.

It is an arithmetic number, because the mean of its divisors is an integer number (29929235689).

Almost surely, 2^231554402401 is an apocalyptic number.

231554402401 is the 481201-st square number.

231554402401 is the 240601-st centered octagonal number.

It is an amenable number.

231554402401 is a deficient number, since it is larger than the sum of its proper divisors (37808718800).

231554402401 is an frugal number, since it uses more digits than its factorization.

231554402401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137500 (or 68750 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 231554402401 its reverse (104204455132), we get a palindrome (335758857533).

The spelling of 231554402401 in words is "two hundred thirty-one billion, five hundred fifty-four million, four hundred two thousand, four hundred one".