231241133441 has 4 divisors (see below), whose sum is σ = 231319179312. Its totient is φ = 231163087572.

The previous prime is 231241133399. The next prime is 231241133491. The reversal of 231241133441 is 144331142132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231241133441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231241133491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39018491 + ... + 39024416.

It is an arithmetic number, because the mean of its divisors is an integer number (57829794828).

Almost surely, 2^231241133441 is an apocalyptic number.

It is an amenable number.

231241133441 is a deficient number, since it is larger than the sum of its proper divisors (78045871).

231241133441 is an equidigital number, since it uses as much as digits as its factorization.

231241133441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78045870.

The product of its digits is 6912, while the sum is 29.

Adding to 231241133441 its reverse (144331142132), we get a palindrome (375572275573).

The spelling of 231241133441 in words is "two hundred thirty-one billion, two hundred forty-one million, one hundred thirty-three thousand, four hundred forty-one".