28313766431 has 2 divisors, whose sum is σ = 28313766432. Its totient is φ = 28313766430.

The previous prime is 28313766323. The next prime is 28313766457. The reversal of 28313766431 is 13466731382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28313766431 - 2¹⁰ = 28313765407 is a prime.

It is a super-2 number, since 2×28313766431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28313762431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14156883215 + 14156883216.

It is an arithmetic number, because the mean of its divisors is an integer number (14156883216).

Almost surely, 2^28313766431 is an apocalyptic number.

28313766431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28313766431 is an equidigital number, since it uses as much as digits as its factorization.

28313766431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The spelling of 28313766431 in words is "twenty-eight billion, three hundred thirteen million, seven hundred sixty-six thousand, four hundred thirty-one".