315623211065 has 16 divisors (see below), whose sum is σ = 385862514048. Its totient is φ = 247784123136.

The previous prime is 315623211049. The next prime is 315623211119. The reversal of 315623211065 is 560112326513.

It is a cyclic number.

It is not a de Polignac number, because 315623211065 - 2⁴ = 315623211049 is a prime.

It is a super-2 number, since 2×315623211065² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1703072 + ... + 1879281.

It is an arithmetic number, because the mean of its divisors is an integer number (24116407128).

Almost surely, 2^315623211065 is an apocalyptic number.

It is an amenable number.

315623211065 is a deficient number, since it is larger than the sum of its proper divisors (70239302983).

315623211065 is a wasteful number, since it uses less digits than its factorization.

315623211065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582688.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 315623211065 its reverse (560112326513), we get a palindrome (875735537578).

The spelling of 315623211065 in words is "three hundred fifteen billion, six hundred twenty-three million, two hundred eleven thousand, sixty-five".