20404362031 has 2 divisors, whose sum is σ = 20404362032. Its totient is φ = 20404362030.

The previous prime is 20404361993. The next prime is 20404362049. The reversal of 20404362031 is 13026340402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20404362031 - 2²¹ = 20402264879 is a prime.

It is a super-3 number, since 3×20404362031³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 20404361987 and 20404362005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20404362091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10202181015 + 10202181016.

It is an arithmetic number, because the mean of its divisors is an integer number (10202181016).

Almost surely, 2^20404362031 is an apocalyptic number.

20404362031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20404362031 is an equidigital number, since it uses as much as digits as its factorization.

20404362031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The spelling of 20404362031 in words is "twenty billion, four hundred four million, three hundred sixty-two thousand, thirty-one".