70321523 has 2 divisors, whose sum is σ = 70321524. Its totient is φ = 70321522.

The previous prime is 70321487. The next prime is 70321543. The reversal of 70321523 is 32512307.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70321523 - 2⁸ = 70321267 is a prime.

It is not a weakly prime, because it can be changed into another prime (70321543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35160761 + 35160762.

It is an arithmetic number, because the mean of its divisors is an integer number (35160762).

Almost surely, 2^70321523 is an apocalyptic number.

70321523 is a deficient number, since it is larger than the sum of its proper divisors (1).

70321523 is an equidigital number, since it uses as much as digits as its factorization.

70321523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 70321523 is about 8385.7929261341. The cubic root of 70321523 is about 412.7585606394.

The spelling of 70321523 in words is "seventy million, three hundred twenty-one thousand, five hundred twenty-three".