320023055511 has 6 divisors (see below), whose sum is σ = 462255524640. Its totient is φ = 213348703668.

The previous prime is 320023055479. The next prime is 320023055543. The reversal of 320023055511 is 115550320023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320023055479) and next prime (320023055543).

It is not a de Polignac number, because 320023055511 - 2⁵ = 320023055479 is a prime.

It is a super-2 number, since 2×320023055511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320023055551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17779058631 + ... + 17779058648.

It is an arithmetic number, because the mean of its divisors is an integer number (77042587440).

Almost surely, 2^320023055511 is an apocalyptic number.

320023055511 is a deficient number, since it is larger than the sum of its proper divisors (142232469129).

320023055511 is a wasteful number, since it uses less digits than its factorization.

320023055511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35558117285 (or 35558117282 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 320023055511 its reverse (115550320023), we get a palindrome (435573375534).

The spelling of 320023055511 in words is "three hundred twenty billion, twenty-three million, fifty-five thousand, five hundred eleven".