45310231 has 4 divisors (see below), whose sum is σ = 47695000. Its totient is φ = 42925464.

The previous prime is 45310229. The next prime is 45310271. The reversal of 45310231 is 13201354.

45310231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13201354 = 2 ⋅6600677.

It is a cyclic number.

It is not a de Polignac number, because 45310231 - 2¹ = 45310229 is a prime.

It is a super-2 number, since 2×45310231² = 4106034066546722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 2384749 = 45310231 / (4 + 5 + 3 + 1 + 0 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45310199 and 45310208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45310201) 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 3 ways as a sum of consecutive naturals, for example, 1192356 + ... + 1192393.

It is an arithmetic number, because the mean of its divisors is an integer number (11923750).

Almost surely, 2^45310231 is an apocalyptic number.

45310231 is a deficient number, since it is larger than the sum of its proper divisors (2384769).

45310231 is a wasteful number, since it uses less digits than its factorization.

45310231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384768.

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

The square root of 45310231 is about 6731.2874697193. The cubic root of 45310231 is about 356.5048359885.

Adding to 45310231 its reverse (13201354), we get a palindrome (58511585).

The spelling of 45310231 in words is "forty-five million, three hundred ten thousand, two hundred thirty-one".