131020420202433 has 6 divisors (see below), whose sum is σ = 189251718070194. Its totient is φ = 87346946801616.

The previous prime is 131020420202387. The next prime is 131020420202437. The reversal of 131020420202433 is 334202024020131.

131020420202433 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 2 + 0 + 4 + 20 + 202 + 433 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87161960307249 + 43858459895184 = 9336057^2 + 6622572^2 .

It is not a de Polignac number, because 131020420202433 - 2¹⁷ = 131020420071361 is a prime.

It is a super-2 number, since 2×131020420202433² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131020420202397 and 131020420202406.

It is not an unprimeable number, because it can be changed into a prime (131020420202437) 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, 7278912233460 + ... + 7278912233477.

It is an arithmetic number, because the mean of its divisors is an integer number (31541953011699).

Almost surely, 2^{131020420202433} is an apocalyptic number.

It is an amenable number.

131020420202433 is a deficient number, since it is larger than the sum of its proper divisors (58231297867761).

131020420202433 is a wasteful number, since it uses less digits than its factorization.

131020420202433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14557824466943 (or 14557824466940 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 131020420202433 its reverse (334202024020131), we get a palindrome (465222444222564).

The spelling of 131020420202433 in words is "one hundred thirty-one trillion, twenty billion, four hundred twenty million, two hundred two thousand, four hundred thirty-three".