31132135443 has 8 divisors (see below), whose sum is σ = 41510606800. Its totient is φ = 20754210528.

The previous prime is 31132135439. The next prime is 31132135483. The reversal of 31132135443 is 34453123113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31132135443 - 2² = 31132135439 is a prime.

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 31132135443.

It is not an unprimeable number, because it can be changed into a prime (31132135403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22953 + ... + 250581.

It is an arithmetic number, because the mean of its divisors is an integer number (5188825850).

Almost surely, 2^31132135443 is an apocalyptic number.

31132135443 is a deficient number, since it is larger than the sum of its proper divisors (10378471357).

31132135443 is a wasteful number, since it uses less digits than its factorization.

31132135443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273221.

The product of its digits is 12960, while the sum is 30.

Adding to 31132135443 its reverse (34453123113), we get a palindrome (65585258556).

The spelling of 31132135443 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty-five thousand, four hundred forty-three".