3402731 has 2 divisors, whose sum is σ = 3402732. Its totient is φ = 3402730.

The previous prime is 3402727. The next prime is 3402733. The reversal of 3402731 is 1372043.

It is a strong prime.

It is an emirp because it is prime and its reverse (1372043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3402731 - 2² = 3402727 is a prime.

It is a super-2 number, since 2×3402731² = 23157156516722, which contains 22 as substring.

Together with 3402733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3402733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701365 + 1701366.

It is an arithmetic number, because the mean of its divisors is an integer number (1701366).

Almost surely, 2^3402731 is an apocalyptic number.

3402731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402731 is an equidigital number, since it uses as much as digits as its factorization.

3402731 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 3402731 is about 1844.6492891604. The cubic root of 3402731 is about 150.4097095314.

Adding to 3402731 its reverse (1372043), we get a palindrome (4774774).

The spelling of 3402731 in words is "three million, four hundred two thousand, seven hundred thirty-one".