2211342431 has 4 divisors (see below), whose sum is σ = 2211441864. Its totient is φ = 2211243000.

The previous prime is 2211342401. The next prime is 2211342449. The reversal of 2211342431 is 1342431122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2211342431 - 2²² = 2207148127 is a prime.

It is a super-2 number, since 2×2211342431² = 9780070694281979522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211342397 and 2211342406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211342401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656 + ... + 66506.

It is an arithmetic number, because the mean of its divisors is an integer number (552860466).

Almost surely, 2^2211342431 is an apocalyptic number.

2211342431 is a deficient number, since it is larger than the sum of its proper divisors (99433).

2211342431 is an equidigital number, since it uses as much as digits as its factorization.

2211342431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99432.

The product of its digits is 1152, while the sum is 23.

The square root of 2211342431 is about 47024.9128760490. The cubic root of 2211342431 is about 1302.8227482581.

Adding to 2211342431 its reverse (1342431122), we get a palindrome (3553773553).

The spelling of 2211342431 in words is "two billion, two hundred eleven million, three hundred forty-two thousand, four hundred thirty-one".