28210191313031 has 16 divisors (see below), whose sum is σ = 34767602850624. Its totient is φ = 22289700904704.

The previous prime is 28210191313013. The next prime is 28210191313033. The reversal of 28210191313031 is 13031319101282.

It is a cyclic number.

It is not a de Polignac number, because 28210191313031 - 2¹⁴ = 28210191296647 is a prime.

It is a super-2 number, since 2×28210191313031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28210191312982 and 28210191313000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28210191313033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211394486 + ... + 211527891.

It is an arithmetic number, because the mean of its divisors is an integer number (2172975178164).

Almost surely, 2^{28210191313031} is an apocalyptic number.

28210191313031 is a deficient number, since it is larger than the sum of its proper divisors (6557411537593).

28210191313031 is a wasteful number, since it uses less digits than its factorization.

28210191313031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422923130.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 28210191313031 in words is "twenty-eight trillion, two hundred ten billion, one hundred ninety-one million, three hundred thirteen thousand, thirty-one".