20201487331 has 2 divisors, whose sum is σ = 20201487332. Its totient is φ = 20201487330.

The previous prime is 20201487281. The next prime is 20201487343. The reversal of 20201487331 is 13378410202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20201487331 - 2¹⁵ = 20201454563 is a prime.

It is a super-2 number, since 2×20201487331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20201487293 and 20201487302.

It is not a weakly prime, because it can be changed into another prime (20201487431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100743665 + 10100743666.

It is an arithmetic number, because the mean of its divisors is an integer number (10100743666).

Almost surely, 2^20201487331 is an apocalyptic number.

20201487331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201487331 is an equidigital number, since it uses as much as digits as its factorization.

20201487331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 20201487331 its reverse (13378410202), we get a palindrome (33579897533).

The spelling of 20201487331 in words is "twenty billion, two hundred one million, four hundred eighty-seven thousand, three hundred thirty-one".