213282739 has 2 divisors, whose sum is σ = 213282740. Its totient is φ = 213282738.

The previous prime is 213282737. The next prime is 213282761. The reversal of 213282739 is 937282312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213282739 - 2¹ = 213282737 is a prime.

Together with 213282737, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 213282698 and 213282707.

It is not a weakly prime, because it can be changed into another prime (213282737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106641369 + 106641370.

It is an arithmetic number, because the mean of its divisors is an integer number (106641370).

Almost surely, 2^213282739 is an apocalyptic number.

213282739 is a deficient number, since it is larger than the sum of its proper divisors (1).

213282739 is an equidigital number, since it uses as much as digits as its factorization.

213282739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 213282739 is about 14604.2027854998. The cubic root of 213282739 is about 597.4733929551.

The spelling of 213282739 in words is "two hundred thirteen million, two hundred eighty-two thousand, seven hundred thirty-nine".