45131318 has 4 divisors (see below), whose sum is σ = 67696980. Its totient is φ = 22565658.

The previous prime is 45131309. The next prime is 45131323. The reversal of 45131318 is 81313154.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11282828 + ... + 11282831.

It is an arithmetic number, because the mean of its divisors is an integer number (16924245).

Almost surely, 2^45131318 is an apocalyptic number.

45131318 is a deficient number, since it is larger than the sum of its proper divisors (22565662).

45131318 is a wasteful number, since it uses less digits than its factorization.

45131318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22565661.

The product of its digits is 1440, while the sum is 26.

The square root of 45131318 is about 6717.9846680385. The cubic root of 45131318 is about 356.0349826751.

The spelling of 45131318 in words is "forty-five million, one hundred thirty-one thousand, three hundred eighteen".