213657470239 has 2 divisors, whose sum is σ = 213657470240. Its totient is φ = 213657470238.

The previous prime is 213657470203. The next prime is 213657470261. The reversal of 213657470239 is 932074756312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213657470239 - 2²⁵ = 213623915807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213657470192 and 213657470201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213657470269) 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, 106828735119 + 106828735120.

It is an arithmetic number, because the mean of its divisors is an integer number (106828735120).

Almost surely, 2^213657470239 is an apocalyptic number.

213657470239 is a deficient number, since it is larger than the sum of its proper divisors (1).

213657470239 is an equidigital number, since it uses as much as digits as its factorization.

213657470239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 213657470239 in words is "two hundred thirteen billion, six hundred fifty-seven million, four hundred seventy thousand, two hundred thirty-nine".