406707431 has 4 divisors (see below), whose sum is σ = 437992632. Its totient is φ = 375422232.

The previous prime is 406707419. The next prime is 406707437. The reversal of 406707431 is 134707604.

It is a happy number.

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 406707431 - 2¹⁰ = 406706407 is a prime.

It is a super-2 number, since 2×406707431² = 330821868861239522, 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 (406707437) 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, 15642581 + ... + 15642606.

It is an arithmetic number, because the mean of its divisors is an integer number (109498158).

Almost surely, 2^406707431 is an apocalyptic number.

406707431 is a deficient number, since it is larger than the sum of its proper divisors (31285201).

406707431 is a wasteful number, since it uses less digits than its factorization.

406707431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31285200.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 406707431 is about 20166.9886448126. The cubic root of 406707431 is about 740.9018897656.

The spelling of 406707431 in words is "four hundred six million, seven hundred seven thousand, four hundred thirty-one".