210031102123 has 8 divisors (see below), whose sum is σ = 213179333328. Its totient is φ = 206883266304.

The previous prime is 210031102117. The next prime is 210031102129. The reversal of 210031102123 is 321201130012.

It is an interprime number because it is at equal distance from previous prime (210031102117) and next prime (210031102129).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210031102123 is a prime.

It is a super-2 number, since 2×210031102123² (a number of 23 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 = 210031102097 and 210031102106.

It is not an unprimeable number, because it can be changed into a prime (210031102129) 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, 1075215 + ... + 1255447.

It is an arithmetic number, because the mean of its divisors is an integer number (26647416666).

Almost surely, 2^210031102123 is an apocalyptic number.

210031102123 is a deficient number, since it is larger than the sum of its proper divisors (3148231205).

210031102123 is a wasteful number, since it uses less digits than its factorization.

210031102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197693.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210031102123 its reverse (321201130012), we get a palindrome (531232232135).

The spelling of 210031102123 in words is "two hundred ten billion, thirty-one million, one hundred two thousand, one hundred twenty-three".