71452231 has 2 divisors, whose sum is σ = 71452232. Its totient is φ = 71452230.

The previous prime is 71452223. The next prime is 71452243. The reversal of 71452231 is 13225417.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71452231 - 2³ = 71452223 is a prime.

It is a super-2 number, since 2×71452231² = 10210842629754722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71452196 and 71452205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71452211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35726115 + 35726116.

It is an arithmetic number, because the mean of its divisors is an integer number (35726116).

Almost surely, 2^71452231 is an apocalyptic number.

71452231 is a deficient number, since it is larger than the sum of its proper divisors (1).

71452231 is an equidigital number, since it uses as much as digits as its factorization.

71452231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 71452231 is about 8452.9421505178. The cubic root of 71452231 is about 414.9590727530.

Adding to 71452231 its reverse (13225417), we get a palindrome (84677648).

The spelling of 71452231 in words is "seventy-one million, four hundred fifty-two thousand, two hundred thirty-one".