31002240143 has 8 divisors (see below), whose sum is σ = 35511843840. Its totient is φ = 26512814520.

The previous prime is 31002240121. The next prime is 31002240163. The reversal of 31002240143 is 34104220013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31002240143 - 2¹⁰ = 31002239119 is a prime.

It is a super-2 number, since 2×31002240143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002240103) 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 7 ways as a sum of consecutive naturals, for example, 5041223 + ... + 5047368.

It is an arithmetic number, because the mean of its divisors is an integer number (4438980480).

Almost surely, 2^31002240143 is an apocalyptic number.

31002240143 is a deficient number, since it is larger than the sum of its proper divisors (4509603697).

31002240143 is a wasteful number, since it uses less digits than its factorization.

31002240143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10089037.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31002240143 its reverse (34104220013), we get a palindrome (65106460156).

The spelling of 31002240143 in words is "thirty-one billion, two million, two hundred forty thousand, one hundred forty-three".