20302131033 has 10 divisors (see below), whose sum is σ = 30327874874. Its totient is φ = 13534753968.

The previous prime is 20302131029. The next prime is 20302131061. The reversal of 20302131033 is 33013120302.

20302131033 is a `hidden beast` number, since 20 + 302 + 1 + 310 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19907234649 + 394896384 = 141093^2 + 19872^2 .

It is not a de Polignac number, because 20302131033 - 2² = 20302131029 is a prime.

It is a super-2 number, since 2×20302131033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302130997 and 20302131015.

It is not an unprimeable number, because it can be changed into a prime (20302135033) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 125321716 + ... + 125321877.

Almost surely, 2^20302131033 is an apocalyptic number.

It is an amenable number.

20302131033 is a deficient number, since it is larger than the sum of its proper divisors (10025743841).

20302131033 is an equidigital number, since it uses as much as digits as its factorization.

20302131033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250643605 (or 250643596 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20302131033 its reverse (33013120302), we get a palindrome (53315251335).

The spelling of 20302131033 in words is "twenty billion, three hundred two million, one hundred thirty-one thousand, thirty-three".