103121312103 has 12 divisors (see below), whose sum is σ = 149071333320. Its totient is φ = 68692928976.

The previous prime is 103121312071. The next prime is 103121312123. The reversal of 103121312103 is 301213121301.

103121312103 is a `hidden beast` number, since 10 + 312 + 131 + 210 + 3 = 666.

It is not a de Polignac number, because 103121312103 - 2⁵ = 103121312071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103121312123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4539076 + ... + 4561737.

It is an arithmetic number, because the mean of its divisors is an integer number (12422611110).

Almost surely, 2^103121312103 is an apocalyptic number.

103121312103 is a deficient number, since it is larger than the sum of its proper divisors (45950021217).

103121312103 is a wasteful number, since it uses less digits than its factorization.

103121312103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9102078 (or 9102075 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 103121312103 its reverse (301213121301), we get a palindrome (404334433404).

The spelling of 103121312103 in words is "one hundred three billion, one hundred twenty-one million, three hundred twelve thousand, one hundred three".