20311452520033 has 6 divisors (see below), whose sum is σ = 20794796984274. Its totient is φ = 19839093157296.

The previous prime is 20311452520027. The next prime is 20311452520039. The reversal of 20311452520033 is 33002525411302.

It is an interprime number because it is at equal distance from previous prime (20311452520027) and next prime (20311452520039).

It can be written as a sum of positive squares in only one way, i.e., 19724364028944 + 587088491089 = 4441212^2 + 766217^2 .

It is not a de Polignac number, because 20311452520033 - 2³⁷ = 20174013566561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311452519977 and 20311452520004.

It is not an unprimeable number, because it can be changed into a prime (20311452520039) 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, 5492548860 + ... + 5492552557.

It is an arithmetic number, because the mean of its divisors is an integer number (3465799497379).

Almost surely, 2^{20311452520033} is an apocalyptic number.

It is an amenable number.

20311452520033 is a deficient number, since it is larger than the sum of its proper divisors (483344464241).

20311452520033 is an equidigital number, since it uses as much as digits as its factorization.

20311452520033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10985101503 (or 10985101460 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 20311452520033 its reverse (33002525411302), we get a palindrome (53313977931335).

The spelling of 20311452520033 in words is "twenty trillion, three hundred eleven billion, four hundred fifty-two million, five hundred twenty thousand, thirty-three".