28010861031 has 8 divisors (see below), whose sum is σ = 37373883120. Its totient is φ = 18660873152.

The previous prime is 28010861009. The next prime is 28010861033. The reversal of 28010861031 is 13016801082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28010861031 - 2⁹ = 28010860519 is a prime.

It is a super-2 number, since 2×28010861031² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28010861031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28010861033) 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 in 7 ways as a sum of consecutive naturals, for example, 3253536 + ... + 3262133.

It is an arithmetic number, because the mean of its divisors is an integer number (4671735390).

Almost surely, 2^28010861031 is an apocalyptic number.

28010861031 is a deficient number, since it is larger than the sum of its proper divisors (9363022089).

28010861031 is a wasteful number, since it uses less digits than its factorization.

28010861031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517105.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 28010861031 in words is "twenty-eight billion, ten million, eight hundred sixty-one thousand, thirty-one".