45013231 has 4 divisors (see below), whose sum is σ = 46970352. Its totient is φ = 43056112.

The previous prime is 45013183. The next prime is 45013253. The reversal of 45013231 is 13231054.

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

It is a cyclic number.

It is not a de Polignac number, because 45013231 - 2⁷ = 45013103 is a prime.

It is a super-2 number, since 2×45013231² = 4052381930118722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45013199 and 45013208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45013291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978526 + ... + 978571.

It is an arithmetic number, because the mean of its divisors is an integer number (11742588).

Almost surely, 2^45013231 is an apocalyptic number.

45013231 is a deficient number, since it is larger than the sum of its proper divisors (1957121).

45013231 is a wasteful number, since it uses less digits than its factorization.

45013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957120.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 45013231 is about 6709.1900405340. The cubic root of 45013231 is about 355.7241872221.

Adding to 45013231 its reverse (13231054), we get a palindrome (58244285).

The spelling of 45013231 in words is "forty-five million, thirteen thousand, two hundred thirty-one".