316220434 has 16 divisors (see below), whose sum is σ = 503544600. Its totient is φ = 148420864.

The previous prime is 316220431. The next prime is 316220441. The reversal of 316220434 is 434022613.

It can be written as a sum of positive squares in 4 ways, for example, as 199515625 + 116704809 = 14125^2 + 10803^2 .

It is a junction number, because it is equal to n+sod(n) for n = 316220399 and 316220408.

It is not an unprimeable number, because it can be changed into a prime (316220431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272 + ... + 25180.

Almost surely, 2^316220434 is an apocalyptic number.

316220434 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

316220434 is a deficient number, since it is larger than the sum of its proper divisors (187324166).

316220434 is a wasteful number, since it uses less digits than its factorization.

316220434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24317.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 316220434 is about 17782.5879443910. The cubic root of 316220434 is about 681.2868035668.

The spelling of 316220434 in words is "three hundred sixteen million, two hundred twenty thousand, four hundred thirty-four".