231310120003 has 4 divisors (see below), whose sum is σ = 231846802848. Its totient is φ = 230773437160.

The previous prime is 231310119991. The next prime is 231310120091. The reversal of 231310120003 is 300021013132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231310120003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231310120303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268340776 + ... + 268341637.

It is an arithmetic number, because the mean of its divisors is an integer number (57961700712).

Almost surely, 2^231310120003 is an apocalyptic number.

231310120003 is a deficient number, since it is larger than the sum of its proper divisors (536682845).

231310120003 is an equidigital number, since it uses as much as digits as its factorization.

231310120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536682844.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 231310120003 its reverse (300021013132), we get a palindrome (531331133135).

The spelling of 231310120003 in words is "two hundred thirty-one billion, three hundred ten million, one hundred twenty thousand, three".