406303313 has 4 divisors (see below), whose sum is σ = 437557428. Its totient is φ = 375049200.

The previous prime is 406303307. The next prime is 406303351. The reversal of 406303313 is 313303604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 191739409 + 214563904 = 13847^2 + 14648^2 .

It is a cyclic number.

It is not a de Polignac number, because 406303313 - 2⁸ = 406303057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406303013) 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, 15627038 + ... + 15627063.

It is an arithmetic number, because the mean of its divisors is an integer number (109389357).

Almost surely, 2^406303313 is an apocalyptic number.

It is an amenable number.

406303313 is a deficient number, since it is larger than the sum of its proper divisors (31254115).

406303313 is a wasteful number, since it uses less digits than its factorization.

406303313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31254114.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 406303313 is about 20156.9668601206. The cubic root of 406303313 is about 740.6564135417.

Adding to 406303313 its reverse (313303604), we get a palindrome (719606917).

The spelling of 406303313 in words is "four hundred six million, three hundred three thousand, three hundred thirteen".