70544431 has 8 divisors (see below), whose sum is σ = 72517680. Its totient is φ = 68595072.

The previous prime is 70544429. The next prime is 70544449. The reversal of 70544431 is 13444507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70544431 - 2¹ = 70544429 is a prime.

It is a super-2 number, since 2×70544431² = 9953033490227522, which 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 70544431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70544531) 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 7 ways as a sum of consecutive naturals, for example, 100 + ... + 11878.

It is an arithmetic number, because the mean of its divisors is an integer number (9064710).

Almost surely, 2^70544431 is an apocalyptic number.

70544431 is a deficient number, since it is larger than the sum of its proper divisors (1973249).

70544431 is a wasteful number, since it uses less digits than its factorization.

70544431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11945.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 70544431 is about 8399.0732226836. The cubic root of 70544431 is about 413.1942268770.

Adding to 70544431 its reverse (13444507), we get a palindrome (83988938).

The spelling of 70544431 in words is "seventy million, five hundred forty-four thousand, four hundred thirty-one".