31242033043 has 4 divisors (see below), whose sum is σ = 33645266368. Its totient is φ = 28838799720.

The previous prime is 31242033041. The next prime is 31242033047. The reversal of 31242033043 is 34033024213.

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 31242033043 - 2¹ = 31242033041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31242032999 and 31242033017.

It is not an unprimeable number, because it can be changed into a prime (31242033041) by changing a digit.

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, 1201616643 + ... + 1201616668.

It is an arithmetic number, because the mean of its divisors is an integer number (8411316592).

Almost surely, 2^31242033043 is an apocalyptic number.

31242033043 is a deficient number, since it is larger than the sum of its proper divisors (2403233325).

31242033043 is a wasteful number, since it uses less digits than its factorization.

31242033043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403233324.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31242033043 its reverse (34033024213), we get a palindrome (65275057256).

The spelling of 31242033043 in words is "thirty-one billion, two hundred forty-two million, thirty-three thousand, forty-three".