2113131123 has 12 divisors (see below), whose sum is σ = 3080828088. Its totient is φ = 1395587520.

The previous prime is 2113131121. The next prime is 2113131131. The reversal of 2113131123 is 3211313112.

It is not a de Polignac number, because 2113131123 - 2¹ = 2113131121 is a prime.

It is a super-2 number, since 2×2113131123² = 8930646285982482258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113131096 and 2113131105.

It is not an unprimeable number, because it can be changed into a prime (2113131121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1096198 + ... + 1098123.

It is an arithmetic number, because the mean of its divisors is an integer number (256735674).

Almost surely, 2^2113131123 is an apocalyptic number.

2113131123 is a deficient number, since it is larger than the sum of its proper divisors (967696965).

2113131123 is a wasteful number, since it uses less digits than its factorization.

2113131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194434 (or 2194431 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 2113131123 is about 45968.8059775322. The cubic root of 2113131123 is about 1283.2427388382.

Adding to 2113131123 its reverse (3211313112), we get a palindrome (5324444235).

It can be divided in two parts, 211313112 and 3, that multiplied together give a palindrome (633939336).

The spelling of 2113131123 in words is "two billion, one hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-three".