2131133412 has 24 divisors (see below), whose sum is σ = 4980278016. Its totient is φ = 709287328.

The previous prime is 2131133327. The next prime is 2131133419. The reversal of 2131133412 is 2143311312.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2131133419) 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, 128148 + ... + 143819.

It is an arithmetic number, because the mean of its divisors is an integer number (207511584).

Almost surely, 2^2131133412 is an apocalyptic number.

It is an amenable number.

2131133412 is an abundant number, since it is smaller than the sum of its proper divisors (2849144604).

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

2131133412 is a wasteful number, since it uses less digits than its factorization.

2131133412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272627 (or 272625 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 2131133412 is about 46164.2005454443. The cubic root of 2131133412 is about 1286.8765271383.

Adding to 2131133412 its reverse (2143311312), we get a palindrome (4274444724).

The spelling of 2131133412 in words is "two billion, one hundred thirty-one million, one hundred thirty-three thousand, four hundred twelve".