31232431032 has 128 divisors (see below), whose sum is σ = 89030223360. Its totient is φ = 9037867520.

The previous prime is 31232430979. The next prime is 31232431039. The reversal of 31232431032 is 23013423213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 31232430993 and 31232431011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232431039) 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 31 ways as a sum of consecutive naturals, for example, 3961078 + ... + 3968954.

It is an arithmetic number, because the mean of its divisors is an integer number (695548620).

Almost surely, 2^31232431032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31232431032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44515111680).

31232431032 is an abundant number, since it is smaller than the sum of its proper divisors (57797792328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31232431032 is a wasteful number, since it uses less digits than its factorization.

31232431032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573 (or 8569 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31232431032 its reverse (23013423213), we get a palindrome (54245854245).

It can be divided in two parts, 31232 and 431032, that added together give a palindrome (462264).

The spelling of 31232431032 in words is "thirty-one billion, two hundred thirty-two million, four hundred thirty-one thousand, thirty-two".