231403555123 has 8 divisors (see below), whose sum is σ = 249651240048. Its totient is φ = 213219786144.

The previous prime is 231403554979. The next prime is 231403555129. The reversal of 231403555123 is 321555304132.

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

It is a cyclic number.

It is not a de Polignac number, because 231403555123 - 2²¹ = 231401457971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231403555129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15971461 + ... + 15985942.

It is an arithmetic number, because the mean of its divisors is an integer number (31206405006).

Almost surely, 2^231403555123 is an apocalyptic number.

231403555123 is a deficient number, since it is larger than the sum of its proper divisors (18247684925).

231403555123 is a wasteful number, since it uses less digits than its factorization.

231403555123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31957973.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 231403555123 its reverse (321555304132), we get a palindrome (552958859255).

The spelling of 231403555123 in words is "two hundred thirty-one billion, four hundred three million, five hundred fifty-five thousand, one hundred twenty-three".