2131133393 has 4 divisors (see below), whose sum is σ = 2166070068. Its totient is φ = 2096196720.

The previous prime is 2131133327. The next prime is 2131133419. The reversal of 2131133393 is 3933311312.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1149752464 + 981380929 = 33908^2 + 31327^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131133393 - 2¹⁰ = 2131132369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131133093) 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, 17468246 + ... + 17468367.

It is an arithmetic number, because the mean of its divisors is an integer number (541517517).

Almost surely, 2^2131133393 is an apocalyptic number.

It is an amenable number.

2131133393 is a deficient number, since it is larger than the sum of its proper divisors (34936675).

2131133393 is an equidigital number, since it uses as much as digits as its factorization.

2131133393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34936674.

The product of its digits is 4374, while the sum is 29.

The square root of 2131133393 is about 46164.2003396571. The cubic root of 2131133393 is about 1286.8765233140.

The spelling of 2131133393 in words is "two billion, one hundred thirty-one million, one hundred thirty-three thousand, three hundred ninety-three".