231331112103 has 128 divisors (see below), whose sum is σ = 394186770432. Its totient is φ = 117420834816.

The previous prime is 231331112101. The next prime is 231331112107. The reversal of 231331112103 is 301211133132.

It is a happy number.

It is not a de Polignac number, because 231331112103 - 2¹ = 231331112101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 231331112103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231331112101) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 534251775 + ... + 534252207.

It is an arithmetic number, because the mean of its divisors is an integer number (3079584144).

Almost surely, 2^231331112103 is an apocalyptic number.

231331112103 is a deficient number, since it is larger than the sum of its proper divisors (162855658329).

231331112103 is a wasteful number, since it uses less digits than its factorization.

231331112103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 231331112103 its reverse (301211133132), we get a palindrome (532542245235).

The spelling of 231331112103 in words is "two hundred thirty-one billion, three hundred thirty-one million, one hundred twelve thousand, one hundred three".