2131133340 has 48 divisors (see below), whose sum is σ = 6819628032. Its totient is φ = 487116096.

The previous prime is 2131133327. The next prime is 2131133419. The reversal of 2131133340 is 433311312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2536644 + ... + 2537483.

It is an arithmetic number, because the mean of its divisors is an integer number (142075584).

Almost surely, 2^2131133340 is an apocalyptic number.

2131133340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131133340 is an abundant number, since it is smaller than the sum of its proper divisors (4688494692).

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

2131133340 is a wasteful number, since it uses less digits than its factorization.

2131133340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5074146 (or 5074144 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 2131133340 is about 46164.1997656192. The cubic root of 2131133340 is about 1286.8765126460.

Adding to 2131133340 its reverse (433311312), we get a palindrome (2564444652).

The spelling of 2131133340 in words is "two billion, one hundred thirty-one million, one hundred thirty-three thousand, three hundred forty".