145304331 has 8 divisors (see below), whose sum is σ = 194289360. Its totient is φ = 96594432.

The previous prime is 145304329. The next prime is 145304339. The reversal of 145304331 is 133403541.

It is a happy number.

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

It is not a de Polignac number, because 145304331 - 2¹ = 145304329 is a prime.

It is a super-2 number, since 2×145304331² = 42226697214715122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145304339) 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, 67546 + ... + 69663.

It is an arithmetic number, because the mean of its divisors is an integer number (24286170).

Almost surely, 2^145304331 is an apocalyptic number.

145304331 is a deficient number, since it is larger than the sum of its proper divisors (48985029).

145304331 is a wasteful number, since it uses less digits than its factorization.

145304331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137565.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 145304331 is about 12054.2246121432. The cubic root of 145304331 is about 525.7260774547.

Adding to 145304331 its reverse (133403541), we get a palindrome (278707872).

The spelling of 145304331 in words is "one hundred forty-five million, three hundred four thousand, three hundred thirty-one".