31214204421440 has 56 divisors (see below), whose sum is σ = 74335209487272. Its totient is φ = 12484609187840.

The previous prime is 31214204421353. The next prime is 31214204421551. The reversal of 31214204421440 is 4412440241213.

It can be written as a sum of positive squares in 4 ways, for example, as 16082602337344 + 15131602084096 = 4010312^2 + 3889936^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 31214204421397 and 31214204421406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453701 + ... + 7914180.

Almost surely, 2^{31214204421440} is an apocalyptic number.

It is an amenable number.

31214204421440 is an abundant number, since it is smaller than the sum of its proper divisors (43121005065832).

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

31214204421440 is a wasteful number, since it uses less digits than its factorization.

31214204421440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379555 (or 8379545 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 31214204421440 its reverse (4412440241213), we get a palindrome (35626644662653).

The spelling of 31214204421440 in words is "thirty-one trillion, two hundred fourteen billion, two hundred four million, four hundred twenty-one thousand, four hundred forty".