145371317 has 16 divisors (see below), whose sum is σ = 179219712. Its totient is φ = 114825600.

The previous prime is 145371313. The next prime is 145371319. The reversal of 145371317 is 713173541.

It is a cyclic number.

It is not a de Polignac number, because 145371317 - 2² = 145371313 is a prime.

It is a super-2 number, since 2×145371317² = 42265639612628978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145371311) 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, 79817 + ... + 81617.

It is an arithmetic number, because the mean of its divisors is an integer number (11201232).

Almost surely, 2^145371317 is an apocalyptic number.

It is an amenable number.

145371317 is a deficient number, since it is larger than the sum of its proper divisors (33848395).

145371317 is a wasteful number, since it uses less digits than its factorization.

145371317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708.

The product of its digits is 8820, while the sum is 32.

The square root of 145371317 is about 12057.0028199383. The cubic root of 145371317 is about 525.8068524657.

The spelling of 145371317 in words is "one hundred forty-five million, three hundred seventy-one thousand, three hundred seventeen".