231144454 has 4 divisors (see below), whose sum is σ = 346716684. Its totient is φ = 115572226.

The previous prime is 231144451. The next prime is 231144467. The reversal of 231144454 is 454441132.

231144454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×231144454² = 106855517229916232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231144451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57786112 + ... + 57786115.

It is an arithmetic number, because the mean of its divisors is an integer number (86679171).

Almost surely, 2^231144454 is an apocalyptic number.

231144454 is a deficient number, since it is larger than the sum of its proper divisors (115572230).

231144454 is a wasteful number, since it uses less digits than its factorization.

231144454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115572229.

The product of its digits is 7680, while the sum is 28.

The square root of 231144454 is about 15203.4355985744. The cubic root of 231144454 is about 613.7071162707.

Adding to 231144454 its reverse (454441132), we get a palindrome (685585586).

The spelling of 231144454 in words is "two hundred thirty-one million, one hundred forty-four thousand, four hundred fifty-four".