31542143356 has 12 divisors (see below), whose sum is σ = 55687236192. Its totient is φ = 15631504448.

The previous prime is 31542143299. The next prime is 31542143377. The reversal of 31542143356 is 65334124513.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 34891300 + ... + 34892203.

It is an arithmetic number, because the mean of its divisors is an integer number (4640603016).

Almost surely, 2^31542143356 is an apocalyptic number.

It is an amenable number.

31542143356 is a deficient number, since it is larger than the sum of its proper divisors (24145092836).

31542143356 is a wasteful number, since it uses less digits than its factorization.

31542143356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69783620 (or 69783618 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

Adding to 31542143356 its reverse (65334124513), we get a palindrome (96876267869).

The spelling of 31542143356 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-three thousand, three hundred fifty-six".