343781994 has 8 divisors (see below), whose sum is σ = 687564000. Its totient is φ = 114593996.

The previous prime is 343781993. The next prime is 343782011. The reversal of 343781994 is 499187343.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

343781994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (343781993) 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, 28648494 + ... + 28648505.

It is an arithmetic number, because the mean of its divisors is an integer number (85945500).

Almost surely, 2^343781994 is an apocalyptic number.

343781994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343781994 is a wasteful number, since it uses less digits than its factorization.

343781994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57297004.

The product of its digits is 653184, while the sum is 48.

The square root of 343781994 is about 18541.3590116798. The cubic root of 343781994 is about 700.5315649463.

The spelling of 343781994 in words is "three hundred forty-three million, seven hundred eighty-one thousand, nine hundred ninety-four".