31040204143 has 24 divisors (see below), whose sum is σ = 35289939600. Its totient is φ = 27251288064.

The previous prime is 31040204141. The next prime is 31040204197. The reversal of 31040204143 is 34140204013.

It is not a de Polignac number, because 31040204143 - 2¹ = 31040204141 is a prime.

It is a super-2 number, since 2×31040204143² (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 (31040204141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 281103 + ... + 375631.

It is an arithmetic number, because the mean of its divisors is an integer number (1470414150).

Almost surely, 2^31040204143 is an apocalyptic number.

31040204143 is a deficient number, since it is larger than the sum of its proper divisors (4249735457).

31040204143 is a wasteful number, since it uses less digits than its factorization.

31040204143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94651 (or 94638 counting only the distinct ones).

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

Adding to 31040204143 its reverse (34140204013), we get a palindrome (65180408156).

The spelling of 31040204143 in words is "thirty-one billion, forty million, two hundred four thousand, one hundred forty-three".