31320103 has 8 divisors (see below), whose sum is σ = 33583680. Its totient is φ = 29103360.

The previous prime is 31320083. The next prime is 31320109. The reversal of 31320103 is 30102313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31320103 - 2⁵ = 31320071 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 (31320109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10318 + ... + 13003.

It is an arithmetic number, because the mean of its divisors is an integer number (4197960).

Almost surely, 2^31320103 is an apocalyptic number.

31320103 is a deficient number, since it is larger than the sum of its proper divisors (2263577).

31320103 is a wasteful number, since it uses less digits than its factorization.

31320103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23417.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 31320103 is about 5596.4366341450. The cubic root of 31320103 is about 315.2156178917.

Adding to 31320103 its reverse (30102313), we get a palindrome (61422416).

The spelling of 31320103 in words is "thirty-one million, three hundred twenty thousand, one hundred three".