231145654 has 8 divisors (see below), whose sum is σ = 347087448. Its totient is φ = 115449840.

The previous prime is 231145643. The next prime is 231145679. The reversal of 231145654 is 456541132.

It is a happy number.

231145654 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 59127 + ... + 62914.

It is an arithmetic number, because the mean of its divisors is an integer number (43385931).

Almost surely, 2^231145654 is an apocalyptic number.

231145654 is a deficient number, since it is larger than the sum of its proper divisors (115941794).

231145654 is a wasteful number, since it uses less digits than its factorization.

231145654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122990.

The product of its digits is 14400, while the sum is 31.

The square root of 231145654 is about 15203.4750632873. The cubic root of 231145654 is about 613.7081783010.

Adding to 231145654 its reverse (456541132), we get a palindrome (687686786).

The spelling of 231145654 in words is "two hundred thirty-one million, one hundred forty-five thousand, six hundred fifty-four".