31232132431 has 8 divisors (see below), whose sum is σ = 31756012128. Its totient is φ = 30708636000.

The previous prime is 31232132413. The next prime is 31232132441. The reversal of 31232132431 is 13423123213.

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

It is a cyclic number.

It is not a de Polignac number, because 31232132431 - 2⁹ = 31232131919 is a prime.

It is a super-2 number, since 2×31232132431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31232132396 and 31232132405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232132441) 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 7 ways as a sum of consecutive naturals, for example, 70941 + ... + 259801.

It is an arithmetic number, because the mean of its divisors is an integer number (3969501516).

Almost surely, 2^31232132431 is an apocalyptic number.

31232132431 is a deficient number, since it is larger than the sum of its proper divisors (523879697).

31232132431 is a wasteful number, since it uses less digits than its factorization.

31232132431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191633.

The product of its digits is 2592, while the sum is 25.

Adding to 31232132431 its reverse (13423123213), we get a palindrome (44655255644).

The spelling of 31232132431 in words is "thirty-one billion, two hundred thirty-two million, one hundred thirty-two thousand, four hundred thirty-one".