2131232566 has 8 divisors (see below), whose sum is σ = 3197936664. Its totient is φ = 1065253680.

The previous prime is 2131232561. The next prime is 2131232567. The reversal of 2131232566 is 6652321312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131232561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173895 + ... + 185746.

It is an arithmetic number, because the mean of its divisors is an integer number (399742083).

Almost surely, 2^2131232566 is an apocalyptic number.

2131232566 is a deficient number, since it is larger than the sum of its proper divisors (1066704098).

2131232566 is a wasteful number, since it uses less digits than its factorization.

2131232566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362606.

The product of its digits is 12960, while the sum is 31.

The square root of 2131232566 is about 46165.2744603560. The cubic root of 2131232566 is about 1286.8964847464.

Adding to 2131232566 its reverse (6652321312), we get a palindrome (8783553878).

The spelling of 2131232566 in words is "two billion, one hundred thirty-one million, two hundred thirty-two thousand, five hundred sixty-six".