70507231 has 2 divisors, whose sum is σ = 70507232. Its totient is φ = 70507230.

The previous prime is 70507219. The next prime is 70507253. The reversal of 70507231 is 13270507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70507231 - 2²¹ = 68410079 is a prime.

It is a super-2 number, since 2×70507231² = 9942539246574722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70507196 and 70507205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70507291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35253615 + 35253616.

It is an arithmetic number, because the mean of its divisors is an integer number (35253616).

Almost surely, 2^70507231 is an apocalyptic number.

70507231 is a deficient number, since it is larger than the sum of its proper divisors (1).

70507231 is an equidigital number, since it uses as much as digits as its factorization.

70507231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 70507231 is about 8396.8584006163. The cubic root of 70507231 is about 413.1215845832.

Adding to 70507231 its reverse (13270507), we get a palindrome (83777738).

The spelling of 70507231 in words is "seventy million, five hundred seven thousand, two hundred thirty-one".