31241342243 has 4 divisors (see below), whose sum is σ = 31242506640. Its totient is φ = 31240177848.

The previous prime is 31241342203. The next prime is 31241342261. The reversal of 31241342243 is 34224314213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34224314213 = 571 ⋅59937503.

It is a cyclic number.

It is not a de Polignac number, because 31241342243 - 2⁸ = 31241341987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31241342203) 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, 540980 + ... + 595937.

It is an arithmetic number, because the mean of its divisors is an integer number (7810626660).

Almost surely, 2^31241342243 is an apocalyptic number.

31241342243 is a deficient number, since it is larger than the sum of its proper divisors (1164397).

31241342243 is a wasteful number, since it uses less digits than its factorization.

31241342243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164396.

The product of its digits is 13824, while the sum is 29.

Adding to 31241342243 its reverse (34224314213), we get a palindrome (65465656456).

The spelling of 31241342243 in words is "thirty-one billion, two hundred forty-one million, three hundred forty-two thousand, two hundred forty-three".