31444421232 has 40 divisors (see below), whose sum is σ = 92835911296. Its totient is φ = 8984120256.

The previous prime is 31444421219. The next prime is 31444421237. The reversal of 31444421232 is 23212444413.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 31444421232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444421237) 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, 46791958 + ... + 46792629.

Almost surely, 2^31444421232 is an apocalyptic number.

It is an amenable number.

31444421232 is an abundant number, since it is smaller than the sum of its proper divisors (61391490064).

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

31444421232 is a wasteful number, since it uses less digits than its factorization.

31444421232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93584605 (or 93584599 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 31444421232 its reverse (23212444413), we get a palindrome (54656865645).

It can be divided in two parts, 31444 and 421232, that added together give a triangular number (452676 = T₉₅₁).

The spelling of 31444421232 in words is "thirty-one billion, four hundred forty-four million, four hundred twenty-one thousand, two hundred thirty-two".