20034520131 has 4 divisors (see below), whose sum is σ = 26712693512. Its totient is φ = 13356346752.

The previous prime is 20034520073. The next prime is 20034520171. The reversal of 20034520131 is 13102543002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20034520131 - 2¹⁴ = 20034503747 is a prime.

It is a super-2 number, since 2×20034520131² (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 = 20034520098 and 20034520107.

It is not an unprimeable number, because it can be changed into a prime (20034520171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3339086686 + ... + 3339086691.

It is an arithmetic number, because the mean of its divisors is an integer number (6678173378).

Almost surely, 2^20034520131 is an apocalyptic number.

20034520131 is a deficient number, since it is larger than the sum of its proper divisors (6678173381).

20034520131 is an equidigital number, since it uses as much as digits as its factorization.

20034520131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6678173380.

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 20034520131 in words is "twenty billion, thirty-four million, five hundred twenty thousand, one hundred thirty-one".