31444431414 has 24 divisors (see below), whose sum is σ = 69125776440. Its totient is φ = 9528615360.

The previous prime is 31444431377. The next prime is 31444431419. The reversal of 31444431414 is 41413444413.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444431419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21655219 + ... + 21656670.

It is an arithmetic number, because the mean of its divisors is an integer number (2880240685).

Almost surely, 2^31444431414 is an apocalyptic number.

31444431414 is an abundant number, since it is smaller than the sum of its proper divisors (37681345026).

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

31444431414 is a wasteful number, since it uses less digits than its factorization.

31444431414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43311916 (or 43311905 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

Adding to 31444431414 its reverse (41413444413), we get a palindrome (72857875827).

The spelling of 31444431414 in words is "thirty-one billion, four hundred forty-four million, four hundred thirty-one thousand, four hundred fourteen".