2112203831 has 2 divisors, whose sum is σ = 2112203832. Its totient is φ = 2112203830.

The previous prime is 2112203813. The next prime is 2112203857. The reversal of 2112203831 is 1383022112.

It is a happy number.

Together with previous prime (2112203813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112203831 - 2⁶ = 2112203767 is a prime.

It is a super-2 number, since 2×2112203831² = 8922810047382153122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112203797 and 2112203806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112203881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056101915 + 1056101916.

It is an arithmetic number, because the mean of its divisors is an integer number (1056101916).

Almost surely, 2^2112203831 is an apocalyptic number.

2112203831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112203831 is an equidigital number, since it uses as much as digits as its factorization.

2112203831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2112203831 is about 45958.7187702181. The cubic root of 2112203831 is about 1283.0550056030.

Adding to 2112203831 its reverse (1383022112), we get a palindrome (3495225943).

The spelling of 2112203831 in words is "two billion, one hundred twelve million, two hundred three thousand, eight hundred thirty-one".