13002031144 has 8 divisors (see below), whose sum is σ = 24378808410. Its totient is φ = 6501015568.

The previous prime is 13002031127. The next prime is 13002031153. The reversal of 13002031144 is 44113020031.

It can be written as a sum of positive squares in only one way, i.e., 8052908644 + 4949122500 = 89738^2 + 70350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812626939 + ... + 812626954.

Almost surely, 2^13002031144 is an apocalyptic number.

It is an amenable number.

13002031144 is a deficient number, since it is larger than the sum of its proper divisors (11376777266).

13002031144 is a wasteful number, since it uses less digits than its factorization.

13002031144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625253899 (or 1625253895 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13002031144 its reverse (44113020031), we get a palindrome (57115051175).

The spelling of 13002031144 in words is "thirteen billion, two million, thirty-one thousand, one hundred forty-four".