231937093 has 2 divisors, whose sum is σ = 231937094. Its totient is φ = 231937092.

The previous prime is 231937091. The next prime is 231937117. The reversal of 231937093 is 390739132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219099204 + 12837889 = 14802^2 + 3583^2 .

It is a cyclic number.

It is not a de Polignac number, because 231937093 - 2¹ = 231937091 is a prime.

Together with 231937091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231937091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115968546 + 115968547.

It is an arithmetic number, because the mean of its divisors is an integer number (115968547).

Almost surely, 2^231937093 is an apocalyptic number.

It is an amenable number.

231937093 is a deficient number, since it is larger than the sum of its proper divisors (1).

231937093 is an equidigital number, since it uses as much as digits as its factorization.

231937093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 231937093 is about 15229.4810482826. The cubic root of 231937093 is about 614.4078226930.

The spelling of 231937093 in words is "two hundred thirty-one million, nine hundred thirty-seven thousand, ninety-three".