31443431204432 has 40 divisors (see below), whose sum is σ = 65608519181856. Its totient is φ = 14512222221696.

The previous prime is 31443431204413. The next prime is 31443431204611. The reversal of 31443431204432 is 23440213434413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24762203 + ... + 26001029.

Almost surely, 2^{31443431204432} is an apocalyptic number.

It is an amenable number.

31443431204432 is an abundant number, since it is smaller than the sum of its proper divisors (34165087977424).

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

31443431204432 is a wasteful number, since it uses less digits than its factorization.

31443431204432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360875 (or 1360869 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 31443431204432 its reverse (23440213434413), we get a palindrome (54883644638845).

The spelling of 31443431204432 in words is "thirty-one trillion, four hundred forty-three billion, four hundred thirty-one million, two hundred four thousand, four hundred thirty-two".