231312103 has 8 divisors (see below), whose sum is σ = 252773136. Its totient is φ = 209923200.

The previous prime is 231312083. The next prime is 231312113. The reversal of 231312103 is 301213132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231312103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231312113) 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, 11208 + ... + 24253.

It is an arithmetic number, because the mean of its divisors is an integer number (31596642).

Almost surely, 2^231312103 is an apocalyptic number.

231312103 is a deficient number, since it is larger than the sum of its proper divisors (21461033).

231312103 is a wasteful number, since it uses less digits than its factorization.

231312103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36065.

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

The square root of 231312103 is about 15208.9481227335. The cubic root of 231312103 is about 613.8554542729.

Adding to 231312103 its reverse (301213132), we get a palindrome (532525235).

The spelling of 231312103 in words is "two hundred thirty-one million, three hundred twelve thousand, one hundred three".