406305531241 has 3 divisors (see below), whose sum is σ = 406306168663. Its totient is φ = 406304893820.

The previous prime is 406305531197. The next prime is 406305531283. The reversal of 406305531241 is 142135503604.

The square root of 406305531241 is 637421.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 300719527641 + 105586003600 = 548379^2 + 324940^2 .

It is not a de Polignac number, because 406305531241 - 2¹⁹ = 406305006953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406305531197 and 406305531206.

It is not an unprimeable number, because it can be changed into a prime (406305531641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 318711 + ... + 956131.

Almost surely, 2^406305531241 is an apocalyptic number.

406305531241 is the 637421-st square number.

406305531241 is the 318711-st centered octagonal number.

It is an amenable number.

406305531241 is a deficient number, since it is larger than the sum of its proper divisors (637422).

406305531241 is an frugal number, since it uses more digits than its factorization.

406305531241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274842 (or 637421 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 406305531241 in words is "four hundred six billion, three hundred five million, five hundred thirty-one thousand, two hundred forty-one".