231426415221 has 16 divisors (see below), whose sum is σ = 312398882880. Its totient is φ = 152380615680.

The previous prime is 231426415159. The next prime is 231426415237. The reversal of 231426415221 is 122514624132.

It is not a de Polignac number, because 231426415221 - 2⁷ = 231426415093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231426410221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357290 + ... + 1518251.

It is an arithmetic number, because the mean of its divisors is an integer number (19524930180).

Almost surely, 2^231426415221 is an apocalyptic number.

It is an amenable number.

231426415221 is a deficient number, since it is larger than the sum of its proper divisors (80972467659).

231426415221 is a wasteful number, since it uses less digits than its factorization.

231426415221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875876.

The product of its digits is 23040, while the sum is 33.

The spelling of 231426415221 in words is "two hundred thirty-one billion, four hundred twenty-six million, four hundred fifteen thousand, two hundred twenty-one".