70813291 has 2 divisors, whose sum is σ = 70813292. Its totient is φ = 70813290.

The previous prime is 70813289. The next prime is 70813307. The reversal of 70813291 is 19231807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70813291 - 2¹ = 70813289 is a prime.

Together with 70813289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (70813241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35406645 + 35406646.

It is an arithmetic number, because the mean of its divisors is an integer number (35406646).

Almost surely, 2^70813291 is an apocalyptic number.

70813291 is a deficient number, since it is larger than the sum of its proper divisors (1).

70813291 is an equidigital number, since it uses as much as digits as its factorization.

70813291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 70813291 is about 8415.0633390367. The cubic root of 70813291 is about 413.7184854436.

The spelling of 70813291 in words is "seventy million, eight hundred thirteen thousand, two hundred ninety-one".