231240454 has 8 divisors (see below), whose sum is σ = 356235408. Its totient is φ = 112495320.

The previous prime is 231240419. The next prime is 231240467. The reversal of 231240454 is 454042132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×231240454² = 106944295132252232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562362 + ... + 1562509.

It is an arithmetic number, because the mean of its divisors is an integer number (44529426).

Almost surely, 2^231240454 is an apocalyptic number.

231240454 is a deficient number, since it is larger than the sum of its proper divisors (124994954).

231240454 is a wasteful number, since it uses less digits than its factorization.

231240454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124910.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 231240454 is about 15206.5924519598. The cubic root of 231240454 is about 613.7920670848.

Adding to 231240454 its reverse (454042132), we get a palindrome (685282586).

The spelling of 231240454 in words is "two hundred thirty-one million, two hundred forty thousand, four hundred fifty-four".