331302145 has 8 divisors (see below), whose sum is σ = 418487040. Its totient is φ = 251092080.

The previous prime is 331302131. The next prime is 331302193. The reversal of 331302145 is 541203133.

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

It is not a de Polignac number, because 331302145 - 2¹³ = 331293953 is a prime.

It is a super-2 number, since 2×331302145² = 219522222563202050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743601 + ... + 1743790.

It is an arithmetic number, because the mean of its divisors is an integer number (52310880).

Almost surely, 2^331302145 is an apocalyptic number.

It is an amenable number.

331302145 is a deficient number, since it is larger than the sum of its proper divisors (87184895).

331302145 is a wasteful number, since it uses less digits than its factorization.

331302145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487415.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 331302145 is about 18201.7072001502. The cubic root of 331302145 is about 691.9500566771.

Adding to 331302145 its reverse (541203133), we get a palindrome (872505278).

The spelling of 331302145 in words is "three hundred thirty-one million, three hundred two thousand, one hundred forty-five".