231341355421 has 4 divisors (see below), whose sum is σ = 252372387744. Its totient is φ = 210310323100.

The previous prime is 231341355407. The next prime is 231341355437. The reversal of 231341355421 is 124553143132.

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 not a de Polignac number, because 231341355421 - 2⁷ = 231341355293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231341358421) 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, 10515516145 + ... + 10515516166.

It is an arithmetic number, because the mean of its divisors is an integer number (63093096936).

Almost surely, 2^231341355421 is an apocalyptic number.

It is an amenable number.

231341355421 is a deficient number, since it is larger than the sum of its proper divisors (21031032323).

231341355421 is a wasteful number, since it uses less digits than its factorization.

231341355421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21031032322.

The product of its digits is 43200, while the sum is 34.

Adding to 231341355421 its reverse (124553143132), we get a palindrome (355894498553).

The spelling of 231341355421 in words is "two hundred thirty-one billion, three hundred forty-one million, three hundred fifty-five thousand, four hundred twenty-one".