31203040144 has 10 divisors (see below), whose sum is σ = 60455890310. Its totient is φ = 15601520064.

The previous prime is 31203040123. The next prime is 31203040213. The reversal of 31203040144 is 44104030213.

It can be written as a sum of positive squares in only one way, i.e., 15628000144 + 15575040000 = 125012^2 + 124800^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975094989 + ... + 975095020.

It is an arithmetic number, because the mean of its divisors is an integer number (6045589031).

Almost surely, 2^31203040144 is an apocalyptic number.

It is an amenable number.

31203040144 is a deficient number, since it is larger than the sum of its proper divisors (29252850166).

31203040144 is a wasteful number, since it uses less digits than its factorization.

31203040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950190017 (or 1950190011 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31203040144 its reverse (44104030213), we get a palindrome (75307070357).

The spelling of 31203040144 in words is "thirty-one billion, two hundred three million, forty thousand, one hundred forty-four".