231030013 has 16 divisors (see below), whose sum is σ = 240926400. Its totient is φ = 221389056.

The previous prime is 231030001. The next prime is 231030031. The reversal of 231030013 is 310030132.

It is a cyclic number.

It is not a de Polignac number, because 231030013 - 2²⁵ = 197475581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231029975 and 231030002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231030043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685381 + ... + 685717.

It is an arithmetic number, because the mean of its divisors is an integer number (15057900).

Almost surely, 2^231030013 is an apocalyptic number.

It is an amenable number.

231030013 is a deficient number, since it is larger than the sum of its proper divisors (9896387).

231030013 is a wasteful number, since it uses less digits than its factorization.

231030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 231030013 is about 15199.6714767129. The cubic root of 231030013 is about 613.6058161976.

Adding to 231030013 its reverse (310030132), we get a palindrome (541060145).

It can be divided in two parts, 2310 and 30013, that added together give a palindrome (32323).

The spelling of 231030013 in words is "two hundred thirty-one million, thirty thousand, thirteen".