103131213213 has 64 divisors (see below), whose sum is σ = 163103385600. Its totient is φ = 57927614976.

The previous prime is 103131213203. The next prime is 103131213223. The reversal of 103131213213 is 312312131301.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (103131213203) and next prime (103131213223).

It is not a de Polignac number, because 103131213213 - 2⁵ = 103131213181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 103131213213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103131213203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38813581 + ... + 38816237.

It is an arithmetic number, because the mean of its divisors is an integer number (2548490400).

Almost surely, 2^103131213213 is an apocalyptic number.

It is an amenable number.

103131213213 is a deficient number, since it is larger than the sum of its proper divisors (59972172387).

103131213213 is an equidigital number, since it uses as much as digits as its factorization.

103131213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311 (or 3297 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 103131213213 its reverse (312312131301), we get a palindrome (415443344514).

The spelling of 103131213213 in words is "one hundred three billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred thirteen".