406072231 has 2 divisors, whose sum is σ = 406072232. Its totient is φ = 406072230.

The previous prime is 406072229. The next prime is 406072267. The reversal of 406072231 is 132270604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406072231 - 2¹ = 406072229 is a prime.

It is a super-2 number, since 2×406072231² = 329789313578634722, which contains 22 as substring.

Together with 406072229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 406072196 and 406072205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406072031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203036115 + 203036116.

It is an arithmetic number, because the mean of its divisors is an integer number (203036116).

Almost surely, 2^406072231 is an apocalyptic number.

406072231 is a deficient number, since it is larger than the sum of its proper divisors (1).

406072231 is an equidigital number, since it uses as much as digits as its factorization.

406072231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 406072231 is about 20151.2339820667. The cubic root of 406072231 is about 740.5159726303.

The spelling of 406072231 in words is "four hundred six million, seventy-two thousand, two hundred thirty-one".