231442093 has 2 divisors, whose sum is σ = 231442094. Its totient is φ = 231442092.

The previous prime is 231442061. The next prime is 231442109. The reversal of 231442093 is 390244132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231435369 + 6724 = 15213^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 231442093 - 2⁵ = 231442061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231442033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115721046 + 115721047.

It is an arithmetic number, because the mean of its divisors is an integer number (115721047).

Almost surely, 2^231442093 is an apocalyptic number.

It is an amenable number.

231442093 is a deficient number, since it is larger than the sum of its proper divisors (1).

231442093 is an equidigital number, since it uses as much as digits as its factorization.

231442093 is an evil number, because the sum of its binary digits is even.

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

The square root of 231442093 is about 15213.2209935963. The cubic root of 231442093 is about 613.9704217803.

The spelling of 231442093 in words is "two hundred thirty-one million, four hundred forty-two thousand, ninety-three".