316421405643331 has 4 divisors (see below), whose sum is σ = 316606555677600. Its totient is φ = 316236255609064.

The previous prime is 316421405643319. The next prime is 316421405643353. The reversal of 316421405643331 is 133346504124613.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 316421405643331 - 2¹¹ = 316421405641283 is a prime.

It is a super-2 number, since 2×316421405643331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316421405643131) 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, 92575014571 + ... + 92575017988.

It is an arithmetic number, because the mean of its divisors is an integer number (79151638919400).

Almost surely, 2^{316421405643331} is an apocalyptic number.

316421405643331 is a deficient number, since it is larger than the sum of its proper divisors (185150034269).

316421405643331 is a wasteful number, since it uses less digits than its factorization.

316421405643331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185150034268.

The product of its (nonzero) digits is 1866240, while the sum is 46.

Adding to 316421405643331 its reverse (133346504124613), we get a palindrome (449767909767944).

The spelling of 316421405643331 in words is "three hundred sixteen trillion, four hundred twenty-one billion, four hundred five million, six hundred forty-three thousand, three hundred thirty-one".