3042731 has 2 divisors, whose sum is σ = 3042732. Its totient is φ = 3042730.

The previous prime is 3042719. The next prime is 3042749. The reversal of 3042731 is 1372403.

It is a weak prime.

It is an emirp because it is prime and its reverse (1372403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3042731 - 2⁶ = 3042667 is a prime.

It is a super-2 number, since 2×3042731² = 18516423876722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3042701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1521365 + 1521366.

It is an arithmetic number, because the mean of its divisors is an integer number (1521366).

Almost surely, 2^3042731 is an apocalyptic number.

3042731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3042731 is an equidigital number, since it uses as much as digits as its factorization.

3042731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 3042731 is about 1744.3425695660. The cubic root of 3042731 is about 144.9064954033.

It can be divided in two parts, 3042 and 731, that added together give a palindrome (3773).

The spelling of 3042731 in words is "three million, forty-two thousand, seven hundred thirty-one".