70312481 has 2 divisors, whose sum is σ = 70312482. Its totient is φ = 70312480.

The previous prime is 70312421. The next prime is 70312513. The reversal of 70312481 is 18421307.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70291456 + 21025 = 8384^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 70312481 - 2¹⁴ = 70296097 is a prime.

It is a super-2 number, since 2×70312481² = 9887689968750722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70312481.

It is not a weakly prime, because it can be changed into another prime (70312421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35156240 + 35156241.

It is an arithmetic number, because the mean of its divisors is an integer number (35156241).

Almost surely, 2^70312481 is an apocalyptic number.

It is an amenable number.

70312481 is a deficient number, since it is larger than the sum of its proper divisors (1).

70312481 is an equidigital number, since it uses as much as digits as its factorization.

70312481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 70312481 is about 8385.2537826830. The cubic root of 70312481 is about 412.7408689346.

Adding to 70312481 its reverse (18421307), we get a palindrome (88733788).

The spelling of 70312481 in words is "seventy million, three hundred twelve thousand, four hundred eighty-one".