31103003123 has 8 divisors (see below), whose sum is σ = 32991096528. Its totient is φ = 29221410304.

The previous prime is 31103003083. The next prime is 31103003161. The reversal of 31103003123 is 32130030113.

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 31103003123 - 2²⁰ = 31101954547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31103003623) 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, 1615286 + ... + 1634427.

It is an arithmetic number, because the mean of its divisors is an integer number (4123887066).

Almost surely, 2^31103003123 is an apocalyptic number.

31103003123 is a deficient number, since it is larger than the sum of its proper divisors (1888093405).

31103003123 is a wasteful number, since it uses less digits than its factorization.

31103003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250293.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31103003123 its reverse (32130030113), we get a palindrome (63233033236).

The spelling of 31103003123 in words is "thirty-one billion, one hundred three million, three thousand, one hundred twenty-three".