130311002021 has 4 divisors (see below), whose sum is σ = 130508743200. Its totient is φ = 130113260844.

The previous prime is 130311001999. The next prime is 130311002023. The reversal of 130311002021 is 120200113031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130311002021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130311001987 and 130311002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130311002023) 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 3 ways as a sum of consecutive naturals, for example, 98869601 + ... + 98870918.

It is an arithmetic number, because the mean of its divisors is an integer number (32627185800).

Almost surely, 2^130311002021 is an apocalyptic number.

It is an amenable number.

130311002021 is a deficient number, since it is larger than the sum of its proper divisors (197741179).

130311002021 is an equidigital number, since it uses as much as digits as its factorization.

130311002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197741178.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 130311002021 its reverse (120200113031), we get a palindrome (250511115052).

The spelling of 130311002021 in words is "one hundred thirty billion, three hundred eleven million, two thousand, twenty-one".