406312 has 8 divisors (see below), whose sum is σ = 761850. Its totient is φ = 203152.

The previous prime is 406309. The next prime is 406313. The reversal of 406312 is 213604.

It can be written as a sum of positive squares in only one way, i.e., 401956 + 4356 = 634^2 + 66^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (406313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25387 + ... + 25402.

2⁴⁰⁶³¹² is an apocalyptic number.

It is an amenable number.

406312 is a deficient number, since it is larger than the sum of its proper divisors (355538).

406312 is a wasteful number, since it uses less digits than its factorization.

406312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50795 (or 50791 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 406312 is about 637.4260741451. The cubic root of 406312 is about 74.0661692058.

Adding to 406312 its reverse (213604), we get a palindrome (619916).

The spelling of 406312 in words is "four hundred six thousand, three hundred twelve".