231415493 has 2 divisors, whose sum is σ = 231415494. Its totient is φ = 231415492.

The previous prime is 231415453. The next prime is 231415529. The reversal of 231415493 is 394514132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152596609 + 78818884 = 12353^2 + 8878^2 .

It is a cyclic number.

It is not a de Polignac number, because 231415493 - 2²⁶ = 164306629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231415423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115707746 + 115707747.

It is an arithmetic number, because the mean of its divisors is an integer number (115707747).

Almost surely, 2^231415493 is an apocalyptic number.

It is an amenable number.

231415493 is a deficient number, since it is larger than the sum of its proper divisors (1).

231415493 is an equidigital number, since it uses as much as digits as its factorization.

231415493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 231415493 is about 15212.3467288910. The cubic root of 231415493 is about 613.9468993538.

The spelling of 231415493 in words is "two hundred thirty-one million, four hundred fifteen thousand, four hundred ninety-three".