303081345 has 40 divisors (see below), whose sum is σ = 620921664. Its totient is φ = 138550176.

The previous prime is 303081341. The next prime is 303081371. The reversal of 303081345 is 543180303.

It is a happy number.

It is not a de Polignac number, because 303081345 - 2² = 303081341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (303081341) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 50619 + ... + 56288.

Almost surely, 2^303081345 is an apocalyptic number.

303081345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

303081345 is an abundant number, since it is smaller than the sum of its proper divisors (317840319).

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

303081345 is a wasteful number, since it uses less digits than its factorization.

303081345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106931 (or 106922 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 303081345 is about 17409.2316028020. The cubic root of 303081345 is about 671.7170963196.

The spelling of 303081345 in words is "three hundred three million, eighty-one thousand, three hundred forty-five".