31223134103 has 4 divisors (see below), whose sum is σ = 35683581840. Its totient is φ = 26762686368.

The previous prime is 31223134097. The next prime is 31223134177. The reversal of 31223134103 is 30143132213.

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 31223134103 - 2¹² = 31223130007 is a prime.

It is a super-2 number, since 2×31223134103² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223134183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2230223858 + ... + 2230223871.

It is an arithmetic number, because the mean of its divisors is an integer number (8920895460).

Almost surely, 2^31223134103 is an apocalyptic number.

31223134103 is a deficient number, since it is larger than the sum of its proper divisors (4460447737).

31223134103 is an equidigital number, since it uses as much as digits as its factorization.

31223134103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460447736.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31223134103 its reverse (30143132213), we get a palindrome (61366266316).

The spelling of 31223134103 in words is "thirty-one billion, two hundred twenty-three million, one hundred thirty-four thousand, one hundred three".