31323320103 has 8 divisors (see below), whose sum is σ = 42893195248. Its totient is φ = 20317829184.

The previous prime is 31323320087. The next prime is 31323320107. The reversal of 31323320103 is 30102332313.

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

It is not a de Polignac number, because 31323320103 - 2⁴ = 31323320087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31323320103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323320107) 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, 141095926 + ... + 141096147.

It is an arithmetic number, because the mean of its divisors is an integer number (5361649406).

Almost surely, 2^31323320103 is an apocalyptic number.

31323320103 is a deficient number, since it is larger than the sum of its proper divisors (11569875145).

31323320103 is a wasteful number, since it uses less digits than its factorization.

31323320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282192113.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31323320103 its reverse (30102332313), we get a palindrome (61425652416).

It can be divided in two parts, 313233 and 20103, that added together give a triangular number (333336 = T₈₁₆).

The spelling of 31323320103 in words is "thirty-one billion, three hundred twenty-three million, three hundred twenty thousand, one hundred three".