320236212131563 has 32 divisors (see below), whose sum is σ = 398216997664640. Its totient is φ = 250750992384000.

The previous prime is 320236212131513. The next prime is 320236212131587. The reversal of 320236212131563 is 365131212632023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320236212131563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320236212131513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211101043 + ... + 212612611.

It is an arithmetic number, because the mean of its divisors is an integer number (12444281177020).

Almost surely, 2^{320236212131563} is an apocalyptic number.

320236212131563 is a deficient number, since it is larger than the sum of its proper divisors (77980785533077).

320236212131563 is a wasteful number, since it uses less digits than its factorization.

320236212131563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535687.

The product of its (nonzero) digits is 233280, while the sum is 40.

Adding to 320236212131563 its reverse (365131212632023), we get a palindrome (685367424763586).

The spelling of 320236212131563 in words is "three hundred twenty trillion, two hundred thirty-six billion, two hundred twelve million, one hundred thirty-one thousand, five hundred sixty-three".