31503052103 has 4 divisors (see below), whose sum is σ = 31514770320. Its totient is φ = 31491333888.

The previous prime is 31503052081. The next prime is 31503052109. The reversal of 31503052103 is 30125030513.

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 31503052103 - 2⁸ = 31503051847 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 (31503052109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5855075 + ... + 5860452.

It is an arithmetic number, because the mean of its divisors is an integer number (7878692580).

Almost surely, 2^31503052103 is an apocalyptic number.

31503052103 is a deficient number, since it is larger than the sum of its proper divisors (11718217).

31503052103 is a wasteful number, since it uses less digits than its factorization.

31503052103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11718216.

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 31503052103 its reverse (30125030513), we get a palindrome (61628082616).

The spelling of 31503052103 in words is "thirty-one billion, five hundred three million, fifty-two thousand, one hundred three".