70971319 has 2 divisors, whose sum is σ = 70971320. Its totient is φ = 70971318.

The previous prime is 70971253. The next prime is 70971389. The reversal of 70971319 is 91317907.

It is a weak prime.

It is an emirp because it is prime and its reverse (91317907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70971319 - 2¹³ = 70963127 is a prime.

It is a super-2 number, since 2×70971319² = 10073856241199522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70971389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35485659 + 35485660.

It is an arithmetic number, because the mean of its divisors is an integer number (35485660).

Almost surely, 2^70971319 is an apocalyptic number.

70971319 is a deficient number, since it is larger than the sum of its proper divisors (1).

70971319 is an equidigital number, since it uses as much as digits as its factorization.

70971319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 70971319 is about 8424.4476970304. The cubic root of 70971319 is about 414.0260102525.

The spelling of 70971319 in words is "seventy million, nine hundred seventy-one thousand, three hundred nineteen".