32131432331 has 4 divisors (see below), whose sum is σ = 33528451152. Its totient is φ = 30734413512.

The previous prime is 32131432303. The next prime is 32131432357. The reversal of 32131432331 is 13323413123.

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 32131432331 - 2¹⁰ = 32131431307 is a prime.

It is a super-2 number, since 2×32131432331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32131432331.

It is not an unprimeable number, because it can be changed into a prime (32131432631) 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, 698509376 + ... + 698509421.

It is an arithmetic number, because the mean of its divisors is an integer number (8382112788).

Almost surely, 2^32131432331 is an apocalyptic number.

32131432331 is a deficient number, since it is larger than the sum of its proper divisors (1397018821).

32131432331 is a wasteful number, since it uses less digits than its factorization.

32131432331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397018820.

The product of its digits is 3888, while the sum is 26.

Adding to 32131432331 its reverse (13323413123), we get a palindrome (45454845454).

The spelling of 32131432331 in words is "thirty-two billion, one hundred thirty-one million, four hundred thirty-two thousand, three hundred thirty-one".