231242321401 has 12 divisors (see below), whose sum is σ = 289688183652. Its totient is φ = 182960957088.

The previous prime is 231242321389. The next prime is 231242321419. The reversal of 231242321401 is 104123242132.

It can be written as a sum of positive squares in 2 ways, for example, as 153077345001 + 78164976400 = 391251^2 + 279580^2 .

It is not a de Polignac number, because 231242321401 - 2⁵ = 231242321369 is a prime.

It is a super-2 number, since 2×231242321401² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231242321801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181508250 + ... + 181509523.

It is an arithmetic number, because the mean of its divisors is an integer number (24140681971).

Almost surely, 2^231242321401 is an apocalyptic number.

It is an amenable number.

231242321401 is a deficient number, since it is larger than the sum of its proper divisors (58445862251).

231242321401 is a wasteful number, since it uses less digits than its factorization.

231242321401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363017800 (or 363017793 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 231242321401 its reverse (104123242132), we get a palindrome (335365563533).

The spelling of 231242321401 in words is "two hundred thirty-one billion, two hundred forty-two million, three hundred twenty-one thousand, four hundred one".