1031131224432 has 120 divisors (see below), whose sum is σ = 2927067343200. Its totient is φ = 338789767680.

The previous prime is 1031131224401. The next prime is 1031131224439. The reversal of 1031131224432 is 2344221311301.

1031131224432 is a `hidden beast` number, since 1 + 0 + 3 + 1 + 1 + 3 + 1 + 224 + 432 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1031131224396 and 1031131224405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031131224439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56805694 + ... + 56823842.

It is an arithmetic number, because the mean of its divisors is an integer number (24392227860).

Almost surely, 2^{1031131224432} is an apocalyptic number.

1031131224432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031131224432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463533671600).

1031131224432 is an abundant number, since it is smaller than the sum of its proper divisors (1895936118768).

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

1031131224432 is a wasteful number, since it uses less digits than its factorization.

1031131224432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23791 (or 23782 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1031131224432 its reverse (2344221311301), we get a palindrome (3375352535733).

The spelling of 1031131224432 in words is "one trillion, thirty-one billion, one hundred thirty-one million, two hundred twenty-four thousand, four hundred thirty-two".