23211785843 has 2 divisors, whose sum is σ = 23211785844. Its totient is φ = 23211785842.

The previous prime is 23211785813. The next prime is 23211785851. The reversal of 23211785843 is 34858711232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23211785843 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23211785794 and 23211785803.

It is not a weakly prime, because it can be changed into another prime (23211785813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605892921 + 11605892922.

It is an arithmetic number, because the mean of its divisors is an integer number (11605892922).

Almost surely, 2^23211785843 is an apocalyptic number.

23211785843 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211785843 is an equidigital number, since it uses as much as digits as its factorization.

23211785843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The spelling of 23211785843 in words is "twenty-three billion, two hundred eleven million, seven hundred eighty-five thousand, eight hundred forty-three".