32120213531 has 4 divisors (see below), whose sum is σ = 36708815472. Its totient is φ = 27531611592.

The previous prime is 32120213441. The next prime is 32120213557. The reversal of 32120213531 is 13531202123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32120213531 - 2²² = 32116019227 is a prime.

It is a super-2 number, since 2×32120213531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32120213497 and 32120213506.

It is not an unprimeable number, because it can be changed into a prime (32120213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2294300960 + ... + 2294300973.

It is an arithmetic number, because the mean of its divisors is an integer number (9177203868).

Almost surely, 2^32120213531 is an apocalyptic number.

32120213531 is a deficient number, since it is larger than the sum of its proper divisors (4588601941).

32120213531 is an equidigital number, since it uses as much as digits as its factorization.

32120213531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588601940.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 32120213531 its reverse (13531202123), we get a palindrome (45651415654).

The spelling of 32120213531 in words is "thirty-two billion, one hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".