2133431420 has 24 divisors (see below), whose sum is σ = 4547077584. Its totient is φ = 840635136.

The previous prime is 2133431413. The next prime is 2133431423. The reversal of 2133431420 is 241343312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133431423) 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, 794717 + ... + 797396.

It is an arithmetic number, because the mean of its divisors is an integer number (189461566).

Almost surely, 2^2133431420 is an apocalyptic number.

2133431420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133431420 is an abundant number, since it is smaller than the sum of its proper divisors (2413646164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2133431420 is a wasteful number, since it uses less digits than its factorization.

2133431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592189 (or 1592187 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2133431420 is about 46189.0833422790. The cubic root of 2133431420 is about 1287.3389086792.

Adding to 2133431420 its reverse (241343312), we get a palindrome (2374774732).

The spelling of 2133431420 in words is "two billion, one hundred thirty-three million, four hundred thirty-one thousand, four hundred twenty".