2102031123 has 16 divisors (see below), whose sum is σ = 2963233920. Its totient is φ = 1321742016.

The previous prime is 2102031083. The next prime is 2102031143. The reversal of 2102031123 is 3211302012.

It is not a de Polignac number, because 2102031123 - 2¹² = 2102027027 is a prime.

It is a super-2 number, since 2×2102031123² = 8837069684121282258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102031143) 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, 68290 + ... + 94167.

It is an arithmetic number, because the mean of its divisors is an integer number (185202120).

Almost surely, 2^2102031123 is an apocalyptic number.

2102031123 is a deficient number, since it is larger than the sum of its proper divisors (861202797).

2102031123 is a wasteful number, since it uses less digits than its factorization.

2102031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162706.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2102031123 is about 45847.9129623149. The cubic root of 2102031123 is about 1280.9918912855.

Adding to 2102031123 its reverse (3211302012), we get a palindrome (5313333135).

The spelling of 2102031123 in words is "two billion, one hundred two million, thirty-one thousand, one hundred twenty-three".