231012031213 has 4 divisors (see below), whose sum is σ = 231014413440. Its totient is φ = 231009648988.

The previous prime is 231012031181. The next prime is 231012031231. The reversal of 231012031213 is 312130210132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231012031213 - 2⁵ = 231012031181 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 (231012131213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039195 + ... + 1241752.

It is an arithmetic number, because the mean of its divisors is an integer number (57753603360).

Almost surely, 2^231012031213 is an apocalyptic number.

It is an amenable number.

231012031213 is a deficient number, since it is larger than the sum of its proper divisors (2382227).

231012031213 is a wasteful number, since it uses less digits than its factorization.

231012031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382226.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231012031213 its reverse (312130210132), we get a palindrome (543142241345).

The spelling of 231012031213 in words is "two hundred thirty-one billion, twelve million, thirty-one thousand, two hundred thirteen".