231103013 has 4 divisors (see below), whose sum is σ = 231349548. Its totient is φ = 230856480.

The previous prime is 231103009. The next prime is 231103021. The reversal of 231103013 is 310301132.

231103013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 142611364 + 88491649 = 11942^2 + 9407^2 .

It is a cyclic number.

It is not a de Polignac number, because 231103013 - 2² = 231103009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231103003) 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, 121856 + ... + 123737.

It is an arithmetic number, because the mean of its divisors is an integer number (57837387).

Almost surely, 2^231103013 is an apocalyptic number.

It is an amenable number.

231103013 is a deficient number, since it is larger than the sum of its proper divisors (246535).

231103013 is an equidigital number, since it uses as much as digits as its factorization.

231103013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246534.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 231103013 is about 15202.0726547402. The cubic root of 231103013 is about 613.6704376826.

Adding to 231103013 its reverse (310301132), we get a palindrome (541404145).

The spelling of 231103013 in words is "two hundred thirty-one million, one hundred three thousand, thirteen".