406167431 has 4 divisors (see below), whose sum is σ = 410731200. Its totient is φ = 401603664.

The previous prime is 406167407. The next prime is 406167457. The reversal of 406167431 is 134761604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406167431 - 2⁶ = 406167367 is a prime.

It is a super-2 number, since 2×406167431² = 329943964010279522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406167481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281751 + ... + 2281928.

It is an arithmetic number, because the mean of its divisors is an integer number (102682800).

Almost surely, 2^406167431 is an apocalyptic number.

406167431 is a deficient number, since it is larger than the sum of its proper divisors (4563769).

406167431 is an equidigital number, since it uses as much as digits as its factorization.

406167431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563768.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 406167431 is about 20153.5959818589. The cubic root of 406167431 is about 740.5738372225.

The spelling of 406167431 in words is "four hundred six million, one hundred sixty-seven thousand, four hundred thirty-one".