70031080681 has 2 divisors, whose sum is σ = 70031080682. Its totient is φ = 70031080680.

The previous prime is 70031080673. The next prime is 70031080727. The reversal of 70031080681 is 18608013007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43572805081 + 26458275600 = 208741^2 + 162660^2 .

It is a cyclic number.

It is not a de Polignac number, because 70031080681 - 2³ = 70031080673 is a prime.

It is a super-2 number, since 2×70031080681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70031080181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35015540340 + 35015540341.

It is an arithmetic number, because the mean of its divisors is an integer number (35015540341).

Almost surely, 2^70031080681 is an apocalyptic number.

It is an amenable number.

70031080681 is a deficient number, since it is larger than the sum of its proper divisors (1).

70031080681 is an equidigital number, since it uses as much as digits as its factorization.

70031080681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

Adding to 70031080681 its reverse (18608013007), we get a palindrome (88639093688).

The spelling of 70031080681 in words is "seventy billion, thirty-one million, eighty thousand, six hundred eighty-one".