28011010999931 has 2 divisors, whose sum is σ = 28011010999932. Its totient is φ = 28011010999930.

The previous prime is 28011010999901. The next prime is 28011011000029. The reversal of 28011010999931 is 13999901011082.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28011010999931 is a prime.

It is a super-2 number, since 2×28011010999931² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28011010999901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14005505499965 + 14005505499966.

It is an arithmetic number, because the mean of its divisors is an integer number (14005505499966).

Almost surely, 2^{28011010999931} is an apocalyptic number.

28011010999931 is a deficient number, since it is larger than the sum of its proper divisors (1).

28011010999931 is an equidigital number, since it uses as much as digits as its factorization.

28011010999931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 53.

The spelling of 28011010999931 in words is "twenty-eight trillion, eleven billion, ten million, nine hundred ninety-nine thousand, nine hundred thirty-one".