231322323223501 has 2 divisors, whose sum is σ = 231322323223502. Its totient is φ = 231322323223500.

The previous prime is 231322323223367. The next prime is 231322323223507. The reversal of 231322323223501 is 105322323223132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163496474657476 + 67825848566025 = 12786574^2 + 8235645^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322323223501 - 2¹⁵ = 231322323190733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231322323223507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661161611750 + 115661161611751.

It is an arithmetic number, because the mean of its divisors is an integer number (115661161611751).

Almost surely, 2^{231322323223501} is an apocalyptic number.

It is an amenable number.

231322323223501 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322323223501 is an equidigital number, since it uses as much as digits as its factorization.

231322323223501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 231322323223501 its reverse (105322323223132), we get a palindrome (336644646446633).

The spelling of 231322323223501 in words is "two hundred thirty-one trillion, three hundred twenty-two billion, three hundred twenty-three million, two hundred twenty-three thousand, five hundred one".