1002401031144 has 32 divisors (see below), whose sum is σ = 2614959213120. Its totient is φ = 319606125696.

The previous prime is 1002401031143. The next prime is 1002401031161. The reversal of 1002401031144 is 4411301042001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002401031144.

It is not an unprimeable number, because it can be changed into a prime (1002401031143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907971397 + ... + 907972500.

It is an arithmetic number, because the mean of its divisors is an integer number (81717475410).

Almost surely, 2^{1002401031144} is an apocalyptic number.

It is an amenable number.

1002401031144 is an abundant number, since it is smaller than the sum of its proper divisors (1612558181976).

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

1002401031144 is a wasteful number, since it uses less digits than its factorization.

1002401031144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815943929 (or 1815943925 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1002401031144 its reverse (4411301042001), we get a palindrome (5413702073145).

The spelling of 1002401031144 in words is "one trillion, two billion, four hundred one million, thirty-one thousand, one hundred forty-four".