231302414221 has 4 divisors (see below), whose sum is σ = 233548068832. Its totient is φ = 229056759612.

The previous prime is 231302414191. The next prime is 231302414243. The reversal of 231302414221 is 122414203132.

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 231302414221 - 2¹³ = 231302406029 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 (231302414281) 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, 1122827151 + ... + 1122827356.

It is an arithmetic number, because the mean of its divisors is an integer number (58387017208).

Almost surely, 2^231302414221 is an apocalyptic number.

It is an amenable number.

231302414221 is a deficient number, since it is larger than the sum of its proper divisors (2245654611).

231302414221 is a wasteful number, since it uses less digits than its factorization.

231302414221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245654610.

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

Adding to 231302414221 its reverse (122414203132), we get a palindrome (353716617353).

The spelling of 231302414221 in words is "two hundred thirty-one billion, three hundred two million, four hundred fourteen thousand, two hundred twenty-one".