70312823 has 4 divisors (see below), whose sum is σ = 80357520. Its totient is φ = 60268128.

The previous prime is 70312807. The next prime is 70312831. The reversal of 70312823 is 32821307.

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 70312823 - 2⁴ = 70312807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70312792 and 70312801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70312843) 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, 5022338 + ... + 5022351.

It is an arithmetic number, because the mean of its divisors is an integer number (20089380).

Almost surely, 2^70312823 is an apocalyptic number.

70312823 is a deficient number, since it is larger than the sum of its proper divisors (10044697).

70312823 is a wasteful number, since it uses less digits than its factorization.

70312823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10044696.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 70312823 is about 8385.2741756009. The cubic root of 70312823 is about 412.7415381242.

The spelling of 70312823 in words is "seventy million, three hundred twelve thousand, eight hundred twenty-three".