231121144325 has 6 divisors (see below), whose sum is σ = 286590218994. Its totient is φ = 184896915440.

The previous prime is 231121144253. The next prime is 231121144333. The reversal of 231121144325 is 523441121132.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 31348801 + 231089795524 = 5599^2 + 480718^2 .

It is not a de Polignac number, because 231121144325 - 2²⁰ = 231120095749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4622422862 + ... + 4622422911.

It is an arithmetic number, because the mean of its divisors is an integer number (47765036499).

Almost surely, 2^231121144325 is an apocalyptic number.

231121144325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231121144325 is a deficient number, since it is larger than the sum of its proper divisors (55469074669).

231121144325 is an equidigital number, since it uses as much as digits as its factorization.

231121144325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9244845783 (or 9244845778 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

Adding to 231121144325 its reverse (523441121132), we get a palindrome (754562265457).

The spelling of 231121144325 in words is "two hundred thirty-one billion, one hundred twenty-one million, one hundred forty-four thousand, three hundred twenty-five".