231212203013 has 24 divisors (see below), whose sum is σ = 257467741440. Its totient is φ = 207444837600.

The previous prime is 231212203009. The next prime is 231212203021. The reversal of 231212203013 is 310302212132.

It is not a de Polignac number, because 231212203013 - 2² = 231212203009 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 (231212203003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36005543 + ... + 36011963.

It is an arithmetic number, because the mean of its divisors is an integer number (10727822560).

Almost surely, 2^231212203013 is an apocalyptic number.

It is an amenable number.

231212203013 is a deficient number, since it is larger than the sum of its proper divisors (26255538427).

231212203013 is a wasteful number, since it uses less digits than its factorization.

231212203013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10289 (or 10278 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231212203013 its reverse (310302212132), we get a palindrome (541514415145).

The spelling of 231212203013 in words is "two hundred thirty-one billion, two hundred twelve million, two hundred three thousand, thirteen".