70230343681 has 4 divisors (see below), whose sum is σ = 72652079700. Its totient is φ = 67808607664.

The previous prime is 70230343643. The next prime is 70230343721. The reversal of 70230343681 is 18634303207.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55140432400 + 15089911281 = 234820^2 + 122841^2 .

It is a cyclic number.

It is not a de Polignac number, because 70230343681 - 2³¹ = 68082860033 is a prime.

It is a super-2 number, since 2×70230343681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70230343681.

It is not an unprimeable number, because it can be changed into a prime (70230343621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210867966 + ... + 1210868023.

It is an arithmetic number, because the mean of its divisors is an integer number (18163019925).

Almost surely, 2^70230343681 is an apocalyptic number.

It is an amenable number.

70230343681 is a deficient number, since it is larger than the sum of its proper divisors (2421736019).

70230343681 is a wasteful number, since it uses less digits than its factorization.

70230343681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421736018.

The product of its (nonzero) digits is 72576, while the sum is 37.

Adding to 70230343681 its reverse (18634303207), we get a palindrome (88864646888).

The spelling of 70230343681 in words is "seventy billion, two hundred thirty million, three hundred forty-three thousand, six hundred eighty-one".