32015531213 has 4 divisors (see below), whose sum is σ = 32230400700. Its totient is φ = 31800661728.

The previous prime is 32015531209. The next prime is 32015531267. The reversal of 32015531213 is 31213551023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31213551023 = 2099 ⋅14870677.

It can be written as a sum of positive squares in 2 ways, for example, as 16873490404 + 15142040809 = 129898^2 + 123053^2 .

It is a cyclic number.

It is not a de Polignac number, because 32015531213 - 2² = 32015531209 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 (32015531203) by changing a digit.

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, 107434520 + ... + 107434817.

It is an arithmetic number, because the mean of its divisors is an integer number (8057600175).

Almost surely, 2^32015531213 is an apocalyptic number.

It is an amenable number.

32015531213 is a deficient number, since it is larger than the sum of its proper divisors (214869487).

32015531213 is a wasteful number, since it uses less digits than its factorization.

32015531213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214869486.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 32015531213 in words is "thirty-two billion, fifteen million, five hundred thirty-one thousand, two hundred thirteen".