70920231 has 16 divisors (see below), whose sum is σ = 97377888. Its totient is φ = 45878400.

The previous prime is 70920211. The next prime is 70920233. The reversal of 70920231 is 13202907.

It is not a de Polignac number, because 70920231 - 2¹⁰ = 70919207 is a prime.

It is a super-2 number, since 2×70920231² = 10059358330186722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70920233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59461 + ... + 60641.

It is an arithmetic number, because the mean of its divisors is an integer number (6086118).

Almost surely, 2^70920231 is an apocalyptic number.

70920231 is a deficient number, since it is larger than the sum of its proper divisors (26457657).

70920231 is a wasteful number, since it uses less digits than its factorization.

70920231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 70920231 is about 8421.4150236169. The cubic root of 70920231 is about 413.9266422335.

The spelling of 70920231 in words is "seventy million, nine hundred twenty thousand, two hundred thirty-one".