31322131103 has 4 divisors (see below), whose sum is σ = 31322652720. Its totient is φ = 31321609488.

The previous prime is 31322131037. The next prime is 31322131111. The reversal of 31322131103 is 30113122313.

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 31322131103 - 2¹⁸ = 31321868959 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 (31322131133) 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, 156950 + ... + 295427.

It is an arithmetic number, because the mean of its divisors is an integer number (7830663180).

Almost surely, 2^31322131103 is an apocalyptic number.

31322131103 is a deficient number, since it is larger than the sum of its proper divisors (521617).

31322131103 is an equidigital number, since it uses as much as digits as its factorization.

31322131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521616.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31322131103 its reverse (30113122313), we get a palindrome (61435253416).

The spelling of 31322131103 in words is "thirty-one billion, three hundred twenty-two million, one hundred thirty-one thousand, one hundred three".