31444131340 has 12 divisors (see below), whose sum is σ = 66032675856. Its totient is φ = 12577652528.

The previous prime is 31444131307. The next prime is 31444131349. The reversal of 31444131340 is 4313144413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31444131299 and 31444131308.

It is not an unprimeable number, because it can be changed into a prime (31444131349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786103264 + ... + 786103303.

It is an arithmetic number, because the mean of its divisors is an integer number (5502722988).

Almost surely, 2^31444131340 is an apocalyptic number.

It is an amenable number.

31444131340 is an abundant number, since it is smaller than the sum of its proper divisors (34588544516).

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

31444131340 is a wasteful number, since it uses less digits than its factorization.

31444131340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572206576 (or 1572206574 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31444131340 its reverse (4313144413), we get a palindrome (35757275753).

The spelling of 31444131340 in words is "thirty-one billion, four hundred forty-four million, one hundred thirty-one thousand, three hundred forty".