145693317 has 36 divisors (see below), whose sum is σ = 248414208. Its totient is φ = 75675600.

The previous prime is 145693313. The next prime is 145693319. The reversal of 145693317 is 713396541.

It is not a de Polignac number, because 145693317 - 2² = 145693313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145693313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13692 + ... + 21882.

Almost surely, 2^145693317 is an apocalyptic number.

It is an amenable number.

145693317 is a deficient number, since it is larger than the sum of its proper divisors (102720891).

145693317 is a wasteful number, since it uses less digits than its factorization.

145693317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8230 (or 8212 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

The square root of 145693317 is about 12070.3486693633. The cubic root of 145693317 is about 526.1947899569.

The spelling of 145693317 in words is "one hundred forty-five million, six hundred ninety-three thousand, three hundred seventeen".