2111240431 has 2 divisors, whose sum is σ = 2111240432. Its totient is φ = 2111240430.

The previous prime is 2111240419. The next prime is 2111240441. The reversal of 2111240431 is 1340421112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111240431 - 2⁹ = 2111239919 is a prime.

It is a super-2 number, since 2×2111240431² = 8914672314978131522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111240399 and 2111240408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111240441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055620215 + 1055620216.

It is an arithmetic number, because the mean of its divisors is an integer number (1055620216).

Almost surely, 2^2111240431 is an apocalyptic number.

2111240431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111240431 is an equidigital number, since it uses as much as digits as its factorization.

2111240431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2111240431 is about 45948.2364297042. The cubic root of 2111240431 is about 1282.8599039823.

Adding to 2111240431 its reverse (1340421112), we get a palindrome (3451661543).

The spelling of 2111240431 in words is "two billion, one hundred eleven million, two hundred forty thousand, four hundred thirty-one".