303213997 has 8 divisors (see below), whose sum is σ = 304993152. Its totient is φ = 301440000.

The previous prime is 303213979. The next prime is 303214003. The reversal of 303213997 is 799312303.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-303213997 is a prime.

It is a super-3 number, since 3×303213997³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303213947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192222 + ... + 193792.

It is an arithmetic number, because the mean of its divisors is an integer number (38124144).

Almost surely, 2^303213997 is an apocalyptic number.

It is an amenable number.

303213997 is a deficient number, since it is larger than the sum of its proper divisors (1779155).

303213997 is a wasteful number, since it uses less digits than its factorization.

303213997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 303213997 is about 17413.0410037994. The cubic root of 303213997 is about 671.8150805969.

The spelling of 303213997 in words is "three hundred three million, two hundred thirteen thousand, nine hundred ninety-seven".