2131233433 has 16 divisors (see below), whose sum is σ = 2477908864. Its totient is φ = 1795167360.

The previous prime is 2131233431. The next prime is 2131233437. The reversal of 2131233433 is 3343321312.

It is not a de Polignac number, because 2131233433 - 2¹ = 2131233431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131233398 and 2131233407.

It is not an unprimeable number, because it can be changed into a prime (2131233431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744541 + ... + 747397.

It is an arithmetic number, because the mean of its divisors is an integer number (154869304).

Almost surely, 2^2131233433 is an apocalyptic number.

It is an amenable number.

2131233433 is a deficient number, since it is larger than the sum of its proper divisors (346675431).

2131233433 is a wasteful number, since it uses less digits than its factorization.

2131233433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672.

The product of its digits is 3888, while the sum is 25.

The square root of 2131233433 is about 46165.2838505299. The cubic root of 2131233433 is about 1286.8966592525.

Adding to 2131233433 its reverse (3343321312), we get a palindrome (5474554745).

It can be divided in two parts, 21312 and 33433, that added together give a palindrome (54745).

The spelling of 2131233433 in words is "two billion, one hundred thirty-one million, two hundred thirty-three thousand, four hundred thirty-three".