2131132321 has 8 divisors (see below), whose sum is σ = 2340832320. Its totient is φ = 1931185872.

The previous prime is 2131132313. The next prime is 2131132337. The reversal of 2131132321 is 1232311312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131132321 - 2³ = 2131132313 is a prime.

It is a super-2 number, since 2×2131132321² = 9083449939221694082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131132301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2437930 + ... + 2438803.

It is an arithmetic number, because the mean of its divisors is an integer number (292604040).

Almost surely, 2^2131132321 is an apocalyptic number.

It is an amenable number.

2131132321 is a deficient number, since it is larger than the sum of its proper divisors (209699999).

2131132321 is a wasteful number, since it uses less digits than its factorization.

2131132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876775.

The product of its digits is 216, while the sum is 19.

The square root of 2131132321 is about 46164.1887289271. The cubic root of 2131132321 is about 1286.8763075396.

Adding to 2131132321 its reverse (1232311312), we get a palindrome (3363443633).

The spelling of 2131132321 in words is "two billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred twenty-one".