31401413322144 has 96 divisors (see below), whose sum is σ = 85893496960320. Its totient is φ = 10032433969152.

The previous prime is 31401413322107. The next prime is 31401413322163. The reversal of 31401413322144 is 44122331410413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40783714 + ... + 41546529.

It is an arithmetic number, because the mean of its divisors is an integer number (894723926670).

Almost surely, 2^{31401413322144} is an apocalyptic number.

It is an amenable number.

31401413322144 is an abundant number, since it is smaller than the sum of its proper divisors (54492083638176).

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

31401413322144 is a wasteful number, since it uses less digits than its factorization.

31401413322144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82330422 (or 82330414 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 31401413322144 its reverse (44122331410413), we get a palindrome (75523744732557).

The spelling of 31401413322144 in words is "thirty-one trillion, four hundred one billion, four hundred thirteen million, three hundred twenty-two thousand, one hundred forty-four".