231322221293 has 2 divisors, whose sum is σ = 231322221294. Its totient is φ = 231322221292.

The previous prime is 231322221253. The next prime is 231322221337. The reversal of 231322221293 is 392122223132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135808464484 + 95513756809 = 368522^2 + 309053^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322221293 - 2¹² = 231322217197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231322221253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661110646 + 115661110647.

It is an arithmetic number, because the mean of its divisors is an integer number (115661110647).

Almost surely, 2^231322221293 is an apocalyptic number.

It is an amenable number.

231322221293 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322221293 is an equidigital number, since it uses as much as digits as its factorization.

231322221293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The spelling of 231322221293 in words is "two hundred thirty-one billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred ninety-three".