210303031123 has 16 divisors (see below), whose sum is σ = 215258920416. Its totient is φ = 205421690880.

The previous prime is 210303031093. The next prime is 210303031187. The reversal of 210303031123 is 321130303012.

It is a cyclic number.

It is not a de Polignac number, because 210303031123 - 2⁵ = 210303031091 is a prime.

It is a super-2 number, since 2×210303031123² (a number of 23 digits) contains 22 as substring.

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 210303031123.

It is not an unprimeable number, because it can be changed into a prime (210303031423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2288503 + ... + 2378623.

It is an arithmetic number, because the mean of its divisors is an integer number (13453682526).

Almost surely, 2^210303031123 is an apocalyptic number.

210303031123 is a deficient number, since it is larger than the sum of its proper divisors (4955889293).

210303031123 is a wasteful number, since it uses less digits than its factorization.

210303031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90534.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 210303031123 its reverse (321130303012), we get a palindrome (531433334135).

The spelling of 210303031123 in words is "two hundred ten billion, three hundred three million, thirty-one thousand, one hundred twenty-three".