70727231 has 8 divisors (see below), whose sum is σ = 74336640. Its totient is φ = 67162392.

The previous prime is 70727227. The next prime is 70727233. The reversal of 70727231 is 13272707.

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

It is not a de Polignac number, because 70727231 - 2² = 70727227 is a prime.

It is a super-2 number, since 2×70727231² = 10004682409854722, 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 = 70727194 and 70727203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70727233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7865 + ... + 14258.

It is an arithmetic number, because the mean of its divisors is an integer number (9292080).

Almost surely, 2^70727231 is an apocalyptic number.

70727231 is a deficient number, since it is larger than the sum of its proper divisors (3609409).

70727231 is a wasteful number, since it uses less digits than its factorization.

70727231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22285.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 70727231 is about 8409.9483351564. The cubic root of 70727231 is about 413.5508189616.

Adding to 70727231 its reverse (13272707), we get a palindrome (83999938).

The spelling of 70727231 in words is "seventy million, seven hundred twenty-seven thousand, two hundred thirty-one".