145305307 has 16 divisors (see below), whose sum is σ = 176256000. Its totient is φ = 116938368.

The previous prime is 145305269. The next prime is 145305313. The reversal of 145305307 is 703503541.

It is a cyclic number.

It is not a de Polignac number, because 145305307 - 2¹⁹ = 144781019 is a prime.

It is a super-2 number, since 2×145305307² = 42227264484728498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145305317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58158 + ... + 60604.

It is an arithmetic number, because the mean of its divisors is an integer number (11016000).

Almost surely, 2^145305307 is an apocalyptic number.

145305307 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

145305307 is a deficient number, since it is larger than the sum of its proper divisors (30950693).

145305307 is a wasteful number, since it uses less digits than its factorization.

145305307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 145305307 is about 12054.2650958074. The cubic root of 145305307 is about 525.7272545417.

Adding to 145305307 its reverse (703503541), we get a palindrome (848808848).

The spelling of 145305307 in words is "one hundred forty-five million, three hundred five thousand, three hundred seven".