31031104143 has 32 divisors (see below), whose sum is σ = 47372097024. Its totient is φ = 17921135232.

The previous prime is 31031104141. The next prime is 31031104157. The reversal of 31031104143 is 34140113013.

It is not a de Polignac number, because 31031104143 - 2¹ = 31031104141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031104141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278821 + ... + 373902.

It is an arithmetic number, because the mean of its divisors is an integer number (1480378032).

Almost surely, 2^31031104143 is an apocalyptic number.

31031104143 is a deficient number, since it is larger than the sum of its proper divisors (16340992881).

31031104143 is a wasteful number, since it uses less digits than its factorization.

31031104143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652815.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31031104143 its reverse (34140113013), we get a palindrome (65171217156).

The spelling of 31031104143 in words is "thirty-one billion, thirty-one million, one hundred four thousand, one hundred forty-three".