1020310030091 has 4 divisors (see below), whose sum is σ = 1113065487384. Its totient is φ = 927554572800.

The previous prime is 1020310030063. The next prime is 1020310030099. The reversal of 1020310030091 is 1900300130201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020310030091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020310030099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46377728630 + ... + 46377728651.

It is an arithmetic number, because the mean of its divisors is an integer number (278266371846).

Almost surely, 2^{1020310030091} is an apocalyptic number.

1020310030091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020310030091 is a deficient number, since it is larger than the sum of its proper divisors (92755457293).

1020310030091 is an equidigital number, since it uses as much as digits as its factorization.

1020310030091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92755457292.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1020310030091 its reverse (1900300130201), we get a palindrome (2920610160292).

The spelling of 1020310030091 in words is "one trillion, twenty billion, three hundred ten million, thirty thousand, ninety-one".