306991942 has 8 divisors (see below), whose sum is σ = 460562256. Its totient is φ = 153471192.

The previous prime is 306991939. The next prime is 306991961. The reversal of 306991942 is 249199603.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18268 + ... + 30784.

It is an arithmetic number, because the mean of its divisors is an integer number (57570282).

Almost surely, 2^306991942 is an apocalyptic number.

306991942 is a deficient number, since it is larger than the sum of its proper divisors (153570314).

306991942 is a wasteful number, since it uses less digits than its factorization.

306991942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24782.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 306991942 is about 17521.1855192507. The cubic root of 306991942 is about 674.5937689211.

The spelling of 306991942 in words is "three hundred six million, nine hundred ninety-one thousand, nine hundred forty-two".