70807331 has 4 divisors (see below), whose sum is σ = 80922672. Its totient is φ = 60691992.

The previous prime is 70807313. The next prime is 70807391. The reversal of 70807331 is 13370807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13370807 = 43 ⋅310949.

It is a cyclic number.

It is not a de Polignac number, because 70807331 - 2⁶ = 70807267 is a prime.

It is a super-2 number, since 2×70807331² = 10027356246687122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70807294 and 70807303.

It is not an unprimeable number, because it can be changed into a prime (70807301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5057660 + ... + 5057673.

It is an arithmetic number, because the mean of its divisors is an integer number (20230668).

Almost surely, 2^70807331 is an apocalyptic number.

70807331 is a deficient number, since it is larger than the sum of its proper divisors (10115341).

70807331 is a wasteful number, since it uses less digits than its factorization.

70807331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10115340.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 70807331 is about 8414.7092047200. The cubic root of 70807331 is about 413.7068782471.

The spelling of 70807331 in words is "seventy million, eight hundred seven thousand, three hundred thirty-one".