231512453 has 2 divisors, whose sum is σ = 231512454. Its totient is φ = 231512452.

The previous prime is 231512431. The next prime is 231512461. The reversal of 231512453 is 354215132.

It is a happy number.

231512453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176411524 + 55100929 = 13282^2 + 7423^2 .

It is a cyclic number.

It is not a de Polignac number, because 231512453 - 2⁶ = 231512389 is a prime.

It is equal to p_12721274 and since 231512453 and 12721274 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231512483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115756226 + 115756227.

It is an arithmetic number, because the mean of its divisors is an integer number (115756227).

Almost surely, 2^231512453 is an apocalyptic number.

It is an amenable number.

231512453 is a deficient number, since it is larger than the sum of its proper divisors (1).

231512453 is an equidigital number, since it uses as much as digits as its factorization.

231512453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 231512453 is about 15215.5332801713. The cubic root of 231512453 is about 614.0326325641.

Adding to 231512453 its reverse (354215132), we get a palindrome (585727585).

The spelling of 231512453 in words is "two hundred thirty-one million, five hundred twelve thousand, four hundred fifty-three".