20100312091 has 8 divisors (see below), whose sum is σ = 20359594944. Its totient is φ = 19842211200.

The previous prime is 20100312041. The next prime is 20100312103. The reversal of 20100312091 is 19021300102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20100312091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20100312041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261235 + ... + 329308.

It is an arithmetic number, because the mean of its divisors is an integer number (2544949368).

Almost surely, 2^20100312091 is an apocalyptic number.

20100312091 is a deficient number, since it is larger than the sum of its proper divisors (259282853).

20100312091 is a wasteful number, since it uses less digits than its factorization.

20100312091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590981.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20100312091 its reverse (19021300102), we get a palindrome (39121612193).

The spelling of 20100312091 in words is "twenty billion, one hundred million, three hundred twelve thousand, ninety-one".