231142453 has 2 divisors, whose sum is σ = 231142454. Its totient is φ = 231142452.

The previous prime is 231142447. The next prime is 231142477. The reversal of 231142453 is 354241132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191490244 + 39652209 = 13838^2 + 6297^2 .

It is a cyclic number.

It is not a de Polignac number, because 231142453 - 2⁹ = 231141941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231142423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115571226 + 115571227.

It is an arithmetic number, because the mean of its divisors is an integer number (115571227).

Almost surely, 2^231142453 is an apocalyptic number.

It is an amenable number.

231142453 is a deficient number, since it is larger than the sum of its proper divisors (1).

231142453 is an equidigital number, since it uses as much as digits as its factorization.

231142453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 231142453 is about 15203.3697909378. The cubic root of 231142453 is about 613.7053453269.

Adding to 231142453 its reverse (354241132), we get a palindrome (585383585).

The spelling of 231142453 in words is "two hundred thirty-one million, one hundred forty-two thousand, four hundred fifty-three".