316151521346 has 4 divisors (see below), whose sum is σ = 474227282022. Its totient is φ = 158075760672.

The previous prime is 316151521339. The next prime is 316151521349. The reversal of 316151521346 is 643125151613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643125151613 = 7 ⋅91875021659.

It can be written as a sum of positive squares in only one way, i.e., 305465130721 + 10686390625 = 552689^2 + 103375^2 .

It is not an unprimeable number, because it can be changed into a prime (316151521349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79037880335 + ... + 79037880338.

Almost surely, 2^316151521346 is an apocalyptic number.

316151521346 is a deficient number, since it is larger than the sum of its proper divisors (158075760676).

316151521346 is a wasteful number, since it uses less digits than its factorization.

316151521346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158075760675.

The product of its digits is 64800, while the sum is 38.

Adding to 316151521346 its reverse (643125151613), we get a palindrome (959276672959).

The spelling of 316151521346 in words is "three hundred sixteen billion, one hundred fifty-one million, five hundred twenty-one thousand, three hundred forty-six".