342811657 has 4 divisors (see below), whose sum is σ = 344914960. Its totient is φ = 340708356.

The previous prime is 342811633. The next prime is 342811687. The reversal of 342811657 is 756118243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 342811657 - 2¹⁹ = 342287369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342811607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051407 + ... + 1051732.

It is an arithmetic number, because the mean of its divisors is an integer number (86228740).

Almost surely, 2^342811657 is an apocalyptic number.

It is an amenable number.

342811657 is a deficient number, since it is larger than the sum of its proper divisors (2103303).

342811657 is a wasteful number, since it uses less digits than its factorization.

342811657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103302.

The product of its digits is 40320, while the sum is 37.

The square root of 342811657 is about 18515.1736961877. The cubic root of 342811657 is about 699.8718520518.

The spelling of 342811657 in words is "three hundred forty-two million, eight hundred eleven thousand, six hundred fifty-seven".