231040454 has 4 divisors (see below), whose sum is σ = 346560684. Its totient is φ = 115520226.

The previous prime is 231040441. The next prime is 231040471. The reversal of 231040454 is 454040132.

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

It is a super-2 number, since 2×231040454² = 106759382769052232, 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, 57760112 + ... + 57760115.

It is an arithmetic number, because the mean of its divisors is an integer number (86640171).

Almost surely, 2^231040454 is an apocalyptic number.

231040454 is a deficient number, since it is larger than the sum of its proper divisors (115520230).

231040454 is a wasteful number, since it uses less digits than its factorization.

231040454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115520229.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 231040454 is about 15200.0149342032. The cubic root of 231040454 is about 613.6150596746.

Adding to 231040454 its reverse (454040132), we get a palindrome (685080586).

The spelling of 231040454 in words is "two hundred thirty-one million, forty thousand, four hundred fifty-four".