31440402412432 has 40 divisors (see below), whose sum is σ = 65602147497656. Its totient is φ = 14510835818496.

The previous prime is 31440402412369. The next prime is 31440402412453. The reversal of 31440402412432 is 23421420404413.

It can be written as a sum of positive squares in 4 ways, for example, as 2064175852176 + 29376226560256 = 1436724^2 + 5419984^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27922498 + ... + 29026654.

Almost surely, 2^{31440402412432} is an apocalyptic number.

It is an amenable number.

31440402412432 is an abundant number, since it is smaller than the sum of its proper divisors (34161745085224).

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

31440402412432 is a wasteful number, since it uses less digits than its factorization.

31440402412432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241075 (or 1241069 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 31440402412432 its reverse (23421420404413), we get a palindrome (54861822816845).

The spelling of 31440402412432 in words is "thirty-one trillion, four hundred forty billion, four hundred two million, four hundred twelve thousand, four hundred thirty-two".