2131003021 has 8 divisors (see below), whose sum is σ = 2439543744. Its totient is φ = 1823490240.

The previous prime is 2131003013. The next prime is 2131003033. The reversal of 2131003021 is 1203001312.

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 2131003021 - 2³ = 2131003013 is a prime.

It is a super-2 number, since 2×2131003021² = 9082347751022252882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131002992 and 2131003010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131003051) 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, 252535 + ... + 260836.

It is an arithmetic number, because the mean of its divisors is an integer number (304942968).

Almost surely, 2^2131003021 is an apocalyptic number.

It is an amenable number.

2131003021 is a deficient number, since it is larger than the sum of its proper divisors (308540723).

2131003021 is an equidigital number, since it uses as much as digits as its factorization.

2131003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513971.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2131003021 is about 46162.7882715072. The cubic root of 2131003021 is about 1286.8502812389.

Adding to 2131003021 its reverse (1203001312), we get a palindrome (3334004333).

The spelling of 2131003021 in words is "two billion, one hundred thirty-one million, three thousand, twenty-one".