2131213033 has 4 divisors (see below), whose sum is σ = 2243382160. Its totient is φ = 2019043908.

The previous prime is 2131213013. The next prime is 2131213043. The reversal of 2131213033 is 3303121312.

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 not a de Polignac number, because 2131213033 - 2¹³ = 2131204841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 112169107 = 2131213033 / (2 + 1 + 3 + 1 + 2 + 1 + 3 + 0 + 3 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131213033.

It is not an unprimeable number, because it can be changed into a prime (2131213013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56084535 + ... + 56084572.

It is an arithmetic number, because the mean of its divisors is an integer number (560845540).

Almost surely, 2^2131213033 is an apocalyptic number.

It is an amenable number.

2131213033 is a deficient number, since it is larger than the sum of its proper divisors (112169127).

2131213033 is a wasteful number, since it uses less digits than its factorization.

2131213033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112169126.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2131213033 is about 46165.0629047551. The cubic root of 2131213033 is about 1286.8925532146.

Adding to 2131213033 its reverse (3303121312), we get a palindrome (5434334345).

The spelling of 2131213033 in words is "two billion, one hundred thirty-one million, two hundred thirteen thousand, thirty-three".