406151231 has 2 divisors, whose sum is σ = 406151232. Its totient is φ = 406151230.

The previous prime is 406151197. The next prime is 406151261. The reversal of 406151231 is 132151604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406151231 - 2¹⁸ = 405889087 is a prime.

It is a super-2 number, since 2×406151231² = 329917644885630722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 406151197 and 406151206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406151261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203075615 + 203075616.

It is an arithmetic number, because the mean of its divisors is an integer number (203075616).

Almost surely, 2^406151231 is an apocalyptic number.

406151231 is a deficient number, since it is larger than the sum of its proper divisors (1).

406151231 is an equidigital number, since it uses as much as digits as its factorization.

406151231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 406151231 is about 20153.1940644653. The cubic root of 406151231 is about 740.5639911551.

The spelling of 406151231 in words is "four hundred six million, one hundred fifty-one thousand, two hundred thirty-one".