231251093 has 2 divisors, whose sum is σ = 231251094. Its totient is φ = 231251092.

The previous prime is 231251089. The next prime is 231251099. The reversal of 231251093 is 390152132.

231251093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227949604 + 3301489 = 15098^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 231251093 - 2² = 231251089 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231251099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115625546 + 115625547.

It is an arithmetic number, because the mean of its divisors is an integer number (115625547).

Almost surely, 2^231251093 is an apocalyptic number.

It is an amenable number.

231251093 is a deficient number, since it is larger than the sum of its proper divisors (1).

231251093 is an equidigital number, since it uses as much as digits as its factorization.

231251093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 231251093 is about 15206.9422633217. The cubic root of 231251093 is about 613.8014801345.

It can be divided in two parts, 2312510 and 93, that multiplied together give a triangular number (215063430 = T₂₀₇₃₉).

The spelling of 231251093 in words is "two hundred thirty-one million, two hundred fifty-one thousand, ninety-three".