70138223 has 2 divisors, whose sum is σ = 70138224. Its totient is φ = 70138222.

The previous prime is 70138207. The next prime is 70138267. The reversal of 70138223 is 32283107.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70138223 - 2⁴ = 70138207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70138192 and 70138201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70138283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35069111 + 35069112.

It is an arithmetic number, because the mean of its divisors is an integer number (35069112).

Almost surely, 2^70138223 is an apocalyptic number.

70138223 is a deficient number, since it is larger than the sum of its proper divisors (1).

70138223 is an equidigital number, since it uses as much as digits as its factorization.

70138223 is an odious number, because the sum of its binary digits is odd.

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

The square root of 70138223 is about 8374.8565957872. The cubic root of 70138223 is about 412.3996165895.

The spelling of 70138223 in words is "seventy million, one hundred thirty-eight thousand, two hundred twenty-three".