316358721405 has 24 divisors (see below), whose sum is σ = 548840905080. Its totient is φ = 168575178240.

The previous prime is 316358721377. The next prime is 316358721407. The reversal of 316358721405 is 504127853613.

It is a happy number.

316358721405 is a `hidden beast` number, since 3 + 1 + 6 + 3 + 587 + 21 + 40 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 30462117156 + 285896604249 = 174534^2 + 534693^2 .

It is not a de Polignac number, because 316358721405 - 2⁵ = 316358721373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316358721407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3062656 + ... + 3164265.

It is an arithmetic number, because the mean of its divisors is an integer number (22868371045).

Almost surely, 2^316358721405 is an apocalyptic number.

It is an amenable number.

316358721405 is a deficient number, since it is larger than the sum of its proper divisors (232482183675).

316358721405 is a wasteful number, since it uses less digits than its factorization.

316358721405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228061 (or 6228058 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 316358721405 in words is "three hundred sixteen billion, three hundred fifty-eight million, seven hundred twenty-one thousand, four hundred five".