70686840031 has 4 divisors (see below), whose sum is σ = 70692290064. Its totient is φ = 70681390000.

The previous prime is 70686839959. The next prime is 70686840053. The reversal of 70686840031 is 13004868607.

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

It is a cyclic number.

It is not a de Polignac number, because 70686840031 - 2¹⁹ = 70686315743 is a prime.

It is a super-2 number, since 2×70686840031² (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 70686840031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70686840431) 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 in 3 ways as a sum of consecutive naturals, for example, 2705515 + ... + 2731516.

It is an arithmetic number, because the mean of its divisors is an integer number (17673072516).

Almost surely, 2^70686840031 is an apocalyptic number.

70686840031 is a deficient number, since it is larger than the sum of its proper divisors (5450033).

70686840031 is a wasteful number, since it uses less digits than its factorization.

70686840031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450032.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 70686840031 in words is "seventy billion, six hundred eighty-six million, eight hundred forty thousand, thirty-one".