342991007 has 4 divisors (see below), whose sum is σ = 350288736. Its totient is φ = 335693280.

The previous prime is 342991003. The next prime is 342991009. The reversal of 342991007 is 700199243.

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 342991007 - 2² = 342991003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342991003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3648794 + ... + 3648887.

It is an arithmetic number, because the mean of its divisors is an integer number (87572184).

Almost surely, 2^342991007 is an apocalyptic number.

342991007 is a deficient number, since it is larger than the sum of its proper divisors (7297729).

342991007 is an equidigital number, since it uses as much as digits as its factorization.

342991007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297728.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 342991007 is about 18520.0163876817. The cubic root of 342991007 is about 699.9938822595.

The spelling of 342991007 in words is "three hundred forty-two million, nine hundred ninety-one thousand, seven".