31204233240213 has 16 divisors (see below), whose sum is σ = 45388238446656. Its totient is φ = 18911546999040.

The previous prime is 31204233240203. The next prime is 31204233240221.

It is a happy number.

31204233240213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31204233240213 - 2⁸ = 31204233239957 is a prime.

It is a super-2 number, since 2×31204233240213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204233240203) 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, 3242431 + ... + 8539427.

It is an arithmetic number, because the mean of its divisors is an integer number (2836764902916).

Almost surely, 2^{31204233240213} is an apocalyptic number.

31204233240213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31204233240213 is a deficient number, since it is larger than the sum of its proper divisors (14184005206443).

31204233240213 is a wasteful number, since it uses less digits than its factorization.

31204233240213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475524.

The product of its (nonzero) digits is 20736, while the sum is 30.

It can be divided in two parts, 3120423 and 3240213, that added together give a palindrome (6360636).

The spelling of 31204233240213 in words is "thirty-one trillion, two hundred four billion, two hundred thirty-three million, two hundred forty thousand, two hundred thirteen".