2011421431 has 2 divisors, whose sum is σ = 2011421432. Its totient is φ = 2011421430.

The previous prime is 2011421413. The next prime is 2011421441. The reversal of 2011421431 is 1341241102.

Together with previous prime (2011421413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2011421431 - 2⁷ = 2011421303 is a prime.

It is a super-2 number, since 2×2011421431² = 8091632346172175522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011421399 and 2011421408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011421441) 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, 1005710715 + 1005710716.

It is an arithmetic number, because the mean of its divisors is an integer number (1005710716).

Almost surely, 2^2011421431 is an apocalyptic number.

2011421431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011421431 is an equidigital number, since it uses as much as digits as its factorization.

2011421431 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 2011421431 is about 44848.8732411417. The cubic root of 2011421431 is about 1262.3148491152.

Adding to 2011421431 its reverse (1341241102), we get a palindrome (3352662533).

The spelling of 2011421431 in words is "two billion, eleven million, four hundred twenty-one thousand, four hundred thirty-one".