212003783 has 2 divisors, whose sum is σ = 212003784. Its totient is φ = 212003782.

The previous prime is 212003713. The next prime is 212003797. The reversal of 212003783 is 387300212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212003783 is a prime.

It is a super-2 number, since 2×212003783² = 89891208012622178, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212003713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106001891 + 106001892.

It is an arithmetic number, because the mean of its divisors is an integer number (106001892).

Almost surely, 2^212003783 is an apocalyptic number.

212003783 is a deficient number, since it is larger than the sum of its proper divisors (1).

212003783 is an equidigital number, since it uses as much as digits as its factorization.

212003783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 212003783 is about 14560.3496867349. The cubic root of 212003783 is about 596.2767424537.

Adding to 212003783 its reverse (387300212), we get a palindrome (599303995).

The spelling of 212003783 in words is "two hundred twelve million, three thousand, seven hundred eighty-three".