31542143343 has 4 divisors (see below), whose sum is σ = 42056191128. Its totient is φ = 21028095560.

The previous prime is 31542143299. The next prime is 31542143377. The reversal of 31542143343 is 34334124513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31542143343 - 2⁶ = 31542143279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31542143543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5257023888 + ... + 5257023893.

It is an arithmetic number, because the mean of its divisors is an integer number (10514047782).

Almost surely, 2^31542143343 is an apocalyptic number.

31542143343 is a deficient number, since it is larger than the sum of its proper divisors (10514047785).

31542143343 is a wasteful number, since it uses less digits than its factorization.

31542143343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10514047784.

The product of its digits is 51840, while the sum is 33.

Adding to 31542143343 its reverse (34334124513), we get a palindrome (65876267856).

The spelling of 31542143343 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-three thousand, three hundred forty-three".