231310100330221 has 32 divisors (see below), whose sum is σ = 267934003476480. Its totient is φ = 197355433651200.

The previous prime is 231310100330219. The next prime is 231310100330237. The reversal of 231310100330221 is 122033001013132.

231310100330221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231310100330221 - 2¹ = 231310100330219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231310100330192 and 231310100330201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310100330821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251285035 + ... + 252203863.

It is an arithmetic number, because the mean of its divisors is an integer number (8372937608640).

Almost surely, 2^{231310100330221} is an apocalyptic number.

It is an amenable number.

231310100330221 is a deficient number, since it is larger than the sum of its proper divisors (36623903146259).

231310100330221 is a wasteful number, since it uses less digits than its factorization.

231310100330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922645.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231310100330221 its reverse (122033001013132), we get a palindrome (353343101343353).

The spelling of 231310100330221 in words is "two hundred thirty-one trillion, three hundred ten billion, one hundred million, three hundred thirty thousand, two hundred twenty-one".