2131010123 has 4 divisors (see below), whose sum is σ = 2324738328. Its totient is φ = 1937281920.

The previous prime is 2131010083. The next prime is 2131010159. The reversal of 2131010123 is 3210101312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131010123 - 2¹⁶ = 2130944587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131010098 and 2131010107.

It is not an unprimeable number, because it can be changed into a prime (2131010023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96864086 + ... + 96864107.

It is an arithmetic number, because the mean of its divisors is an integer number (581184582).

Almost surely, 2^2131010123 is an apocalyptic number.

2131010123 is a deficient number, since it is larger than the sum of its proper divisors (193728205).

2131010123 is a wasteful number, since it uses less digits than its factorization.

2131010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193728204.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2131010123 is about 46162.8651948728. The cubic root of 2131010123 is about 1286.8517108006.

Adding to 2131010123 its reverse (3210101312), we get a palindrome (5341111435).

The spelling of 2131010123 in words is "two billion, one hundred thirty-one million, ten thousand, one hundred twenty-three".