70831660031 has 4 divisors (see below), whose sum is σ = 77270901864. Its totient is φ = 64392418200.

The previous prime is 70831660021. The next prime is 70831660069. The reversal of 70831660031 is 13006613807.

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

It is not a de Polignac number, because 70831660031 - 2³⁰ = 69757918207 is a prime.

It is a super-2 number, since 2×70831660031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70831659973 and 70831660000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70831660021) 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, 3219620900 + ... + 3219620921.

It is an arithmetic number, because the mean of its divisors is an integer number (19317725466).

Almost surely, 2^70831660031 is an apocalyptic number.

70831660031 is a deficient number, since it is larger than the sum of its proper divisors (6439241833).

70831660031 is a wasteful number, since it uses less digits than its factorization.

70831660031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439241832.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 70831660031 in words is "seventy billion, eight hundred thirty-one million, six hundred sixty thousand, thirty-one".