231340430301221 has 4 divisors (see below), whose sum is σ = 231340652388000. Its totient is φ = 231340208214444.

The previous prime is 231340430301203. The next prime is 231340430301241. The reversal of 231340430301221 is 122103034043132.

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 231340430301221 - 2²⁶ = 231340363192357 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 (231340430301241) 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, 109473491 + ... + 111566688.

It is an arithmetic number, because the mean of its divisors is an integer number (57835163097000).

Almost surely, 2^{231340430301221} is an apocalyptic number.

It is an amenable number.

231340430301221 is a deficient number, since it is larger than the sum of its proper divisors (222086779).

231340430301221 is a wasteful number, since it uses less digits than its factorization.

231340430301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222086778.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 231340430301221 its reverse (122103034043132), we get a palindrome (353443464344353).

The spelling of 231340430301221 in words is "two hundred thirty-one trillion, three hundred forty billion, four hundred thirty million, three hundred one thousand, two hundred twenty-one".