10131212103 has 4 divisors (see below), whose sum is σ = 13508282808. Its totient is φ = 6754141400.

The previous prime is 10131212099. The next prime is 10131212123. The reversal of 10131212103 is 30121213101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10131212103 - 2² = 10131212099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688535348 + ... + 1688535353.

It is an arithmetic number, because the mean of its divisors is an integer number (3377070702).

Almost surely, 2^10131212103 is an apocalyptic number.

10131212103 is a deficient number, since it is larger than the sum of its proper divisors (3377070705).

10131212103 is an equidigital number, since it uses as much as digits as its factorization.

10131212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377070704.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10131212103 its reverse (30121213101), we get a palindrome (40252425204).

The spelling of 10131212103 in words is "ten billion, one hundred thirty-one million, two hundred twelve thousand, one hundred three".