2132531656 has 16 divisors (see below), whose sum is σ = 4000878540. Its totient is φ = 1065630720.

The previous prime is 2132531627. The next prime is 2132531693. The reversal of 2132531656 is 6561352312.

It can be written as a sum of positive squares in 2 ways, for example, as 2131299556 + 1232100 = 46166^2 + 1110^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 64965 + ... + 92116.

Almost surely, 2^2132531656 is an apocalyptic number.

It is an amenable number.

2132531656 is a deficient number, since it is larger than the sum of its proper divisors (1868346884).

2132531656 is a wasteful number, since it uses less digits than its factorization.

2132531656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158784 (or 158780 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 2132531656 is about 46179.3423080061. The cubic root of 2132531656 is about 1287.1579069888.

Adding to 2132531656 its reverse (6561352312), we get a palindrome (8693883968).

The spelling of 2132531656 in words is "two billion, one hundred thirty-two million, five hundred thirty-one thousand, six hundred fifty-six".