31030003123 has 16 divisors (see below), whose sum is σ = 35727300864. Its totient is φ = 26399530080.

The previous prime is 31030003099. The next prime is 31030003157. The reversal of 31030003123 is 32130003013.

It is not a de Polignac number, because 31030003123 - 2⁹ = 31030002611 is a prime.

It is a super-2 number, since 2×31030003123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31030003097 and 31030003106.

It is not an unprimeable number, because it can be changed into a prime (31030003523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496461 + ... + 555457.

It is an arithmetic number, because the mean of its divisors is an integer number (2232956304).

Almost surely, 2^31030003123 is an apocalyptic number.

31030003123 is a deficient number, since it is larger than the sum of its proper divisors (4697297741).

31030003123 is a wasteful number, since it uses less digits than its factorization.

31030003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59562.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31030003123 its reverse (32130003013), we get a palindrome (63160006136).

The spelling of 31030003123 in words is "thirty-one billion, thirty million, three thousand, one hundred twenty-three".