31320214144004 has 12 divisors (see below), whose sum is σ = 56700387674700. Its totient is φ = 15120103379808.

The previous prime is 31320214143931. The next prime is 31320214144007. The reversal of 31320214144004 is 40044141202313.

It can be written as a sum of positive squares in 2 ways, for example, as 12216758581504 + 19103455562500 = 3495248^2 + 4370750^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (31320214144007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 135000922919 + ... + 135000923150.

It is an arithmetic number, because the mean of its divisors is an integer number (4725032306225).

Almost surely, 2^{31320214144004} is an apocalyptic number.

It is an amenable number.

31320214144004 is a deficient number, since it is larger than the sum of its proper divisors (25380173530696).

31320214144004 is a wasteful number, since it uses less digits than its factorization.

31320214144004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270001846102 (or 270001846100 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 31320214144004 its reverse (40044141202313), we get a palindrome (71364355346317).

The spelling of 31320214144004 in words is "thirty-one trillion, three hundred twenty billion, two hundred fourteen million, one hundred forty-four thousand, four".