31144004120002 has 4 divisors (see below), whose sum is σ = 46716006180006. Its totient is φ = 15572002060000.

The previous prime is 31144004119993. The next prime is 31144004120003. The reversal of 31144004120002 is 20002140044113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23883560700561 + 7260443419441 = 4887081^2 + 2694521^2 .

It is not an unprimeable number, because it can be changed into a prime (31144004120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7786001029999 + ... + 7786001030002.

Almost surely, 2^{31144004120002} is an apocalyptic number.

31144004120002 is a deficient number, since it is larger than the sum of its proper divisors (15572002060004).

31144004120002 is a wasteful number, since it uses less digits than its factorization.

31144004120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15572002060003.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31144004120002 its reverse (20002140044113), we get a palindrome (51146144164115).

The spelling of 31144004120002 in words is "thirty-one trillion, one hundred forty-four billion, four million, one hundred twenty thousand, two".