32131323109 has 4 divisors (see below), whose sum is σ = 32158257516. Its totient is φ = 32104388704.

The previous prime is 32131323097. The next prime is 32131323179. The reversal of 32131323109 is 90132313123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90132313123 = 229 ⋅393590887.

It can be written as a sum of positive squares in 2 ways, for example, as 26291001025 + 5840322084 = 162145^2 + 76422^2 .

It is a cyclic number.

It is not a de Polignac number, because 32131323109 - 2²¹ = 32129225957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32131323179) 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, 13465414 + ... + 13467799.

It is an arithmetic number, because the mean of its divisors is an integer number (8039564379).

Almost surely, 2^32131323109 is an apocalyptic number.

It is an amenable number.

32131323109 is a deficient number, since it is larger than the sum of its proper divisors (26934407).

32131323109 is a wasteful number, since it uses less digits than its factorization.

32131323109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26934406.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 32131323109 in words is "thirty-two billion, one hundred thirty-one million, three hundred twenty-three thousand, one hundred nine".