906431 has 2 divisors, whose sum is σ = 906432. Its totient is φ = 906430.

The previous prime is 906427. The next prime is 906461. The reversal of 906431 is 134609.

It is a weak prime.

It is an emirp because it is prime and its reverse (134609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 906431 - 2² = 906427 is a prime.

It is a super-2 number, since 2×906431² = 1643234315522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 906397 and 906406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (906421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453215 + 453216.

It is an arithmetic number, because the mean of its divisors is an integer number (453216).

2⁹⁰⁶⁴³¹ is an apocalyptic number.

906431 is a deficient number, since it is larger than the sum of its proper divisors (1).

906431 is an equidigital number, since it uses as much as digits as its factorization.

906431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 906431 is about 952.0666993441. The cubic root of 906431 is about 96.7783581493.

The spelling of 906431 in words is "nine hundred six thousand, four hundred thirty-one".