28071358831 has 2 divisors, whose sum is σ = 28071358832. Its totient is φ = 28071358830.

The previous prime is 28071358759. The next prime is 28071358877. The reversal of 28071358831 is 13885317082.

It is an a-pointer prime, because the next prime (28071358877) can be obtained adding 28071358831 to its sum of digits (46).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28071358831 - 2¹¹ = 28071356783 is a prime.

It is a super-2 number, since 2×28071358831² (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 (28071308831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14035679415 + 14035679416.

It is an arithmetic number, because the mean of its divisors is an integer number (14035679416).

Almost surely, 2^28071358831 is an apocalyptic number.

28071358831 is a deficient number, since it is larger than the sum of its proper divisors (1).

28071358831 is an equidigital number, since it uses as much as digits as its factorization.

28071358831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 28071358831 in words is "twenty-eight billion, seventy-one million, three hundred fifty-eight thousand, eight hundred thirty-one".