231422293 has 2 divisors, whose sum is σ = 231422294. Its totient is φ = 231422292.

The previous prime is 231422287. The next prime is 231422329. The reversal of 231422293 is 392224132.

Together with next prime (231422329) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231100804 + 321489 = 15202^2 + 567^2 .

It is a cyclic number.

It is not a de Polignac number, because 231422293 - 2⁹ = 231421781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231422393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115711146 + 115711147.

It is an arithmetic number, because the mean of its divisors is an integer number (115711147).

Almost surely, 2^231422293 is an apocalyptic number.

It is an amenable number.

231422293 is a deficient number, since it is larger than the sum of its proper divisors (1).

231422293 is an equidigital number, since it uses as much as digits as its factorization.

231422293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 231422293 is about 15212.5702299118. The cubic root of 231422293 is about 613.9529127772.

The spelling of 231422293 in words is "two hundred thirty-one million, four hundred twenty-two thousand, two hundred ninety-three".