316521130 has 16 divisors (see below), whose sum is σ = 603252360. Its totient is φ = 119160832.

The previous prime is 316521119. The next prime is 316521137. The reversal of 316521130 is 31125613.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 257891481 + 58629649 = 16059^2 + 7657^2 .

It is not an unprimeable number, because it can be changed into a prime (316521137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930775 + ... + 931114.

Almost surely, 2^316521130 is an apocalyptic number.

316521130 is a deficient number, since it is larger than the sum of its proper divisors (286731230).

316521130 is a wasteful number, since it uses less digits than its factorization.

316521130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861913.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 316521130 is about 17791.0407227908. The cubic root of 316521130 is about 681.5026817904.

Adding to 316521130 its reverse (31125613), we get a palindrome (347646743).

The spelling of 316521130 in words is "three hundred sixteen million, five hundred twenty-one thousand, one hundred thirty".