28803947404031 has 2 divisors, whose sum is σ = 28803947404032. Its totient is φ = 28803947404030.

The previous prime is 28803947404019. The next prime is 28803947404087. The reversal of 28803947404031 is 13040474930882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28803947404031 is a prime.

It is a super-2 number, since 2×28803947404031² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28803947494031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14401973702015 + 14401973702016.

It is an arithmetic number, because the mean of its divisors is an integer number (14401973702016).

Almost surely, 2^{28803947404031} is an apocalyptic number.

28803947404031 is a deficient number, since it is larger than the sum of its proper divisors (1).

28803947404031 is an equidigital number, since it uses as much as digits as its factorization.

28803947404031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 28803947404031 in words is "twenty-eight trillion, eight hundred three billion, nine hundred forty-seven million, four hundred four thousand, thirty-one".