231235454 has 4 divisors (see below), whose sum is σ = 346853184. Its totient is φ = 115617726.

The previous prime is 231235421. The next prime is 231235463. The reversal of 231235454 is 454532132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×231235454² = 106939670373172232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57808862 + ... + 57808865.

It is an arithmetic number, because the mean of its divisors is an integer number (86713296).

Almost surely, 2^231235454 is an apocalyptic number.

231235454 is a deficient number, since it is larger than the sum of its proper divisors (115617730).

231235454 is a wasteful number, since it uses less digits than its factorization.

231235454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115617729.

The product of its digits is 14400, while the sum is 29.

The square root of 231235454 is about 15206.4280486905. The cubic root of 231235454 is about 613.7876431437.

Adding to 231235454 its reverse (454532132), we get a palindrome (685767586).

The spelling of 231235454 in words is "two hundred thirty-one million, two hundred thirty-five thousand, four hundred fifty-four".