3151340243 has 4 divisors (see below), whose sum is σ = 3198375240. Its totient is φ = 3104305248.

The previous prime is 3151340221. The next prime is 3151340251. The reversal of 3151340243 is 3420431513.

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 3151340243 - 2¹² = 3151336147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3151340263) 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, 23517398 + ... + 23517531.

It is an arithmetic number, because the mean of its divisors is an integer number (799593810).

Almost surely, 2^3151340243 is an apocalyptic number.

3151340243 is a deficient number, since it is larger than the sum of its proper divisors (47034997).

3151340243 is an equidigital number, since it uses as much as digits as its factorization.

3151340243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47034996.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 3151340243 is about 56136.7993654786. The cubic root of 3151340243 is about 1466.1050797673.

Adding to 3151340243 its reverse (3420431513), we get a palindrome (6571771756).

The spelling of 3151340243 in words is "three billion, one hundred fifty-one million, three hundred forty thousand, two hundred forty-three".