70317523 has 2 divisors, whose sum is σ = 70317524. Its totient is φ = 70317522.

The previous prime is 70317503. The next prime is 70317539. The reversal of 70317523 is 32571307.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70317523 - 2¹⁷ = 70186451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70317491 and 70317500.

It is not a weakly prime, because it can be changed into another prime (70317503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35158761 + 35158762.

It is an arithmetic number, because the mean of its divisors is an integer number (35158762).

Almost surely, 2^70317523 is an apocalyptic number.

70317523 is a deficient number, since it is larger than the sum of its proper divisors (1).

70317523 is an equidigital number, since it uses as much as digits as its factorization.

70317523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 70317523 is about 8385.5544241272. The cubic root of 70317523 is about 412.7507343700.

The spelling of 70317523 in words is "seventy million, three hundred seventeen thousand, five hundred twenty-three".