45131311 has 4 divisors (see below), whose sum is σ = 47786112. Its totient is φ = 42476512.

The previous prime is 45131309. The next prime is 45131323. The reversal of 45131311 is 11313154.

45131311 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: 11313154 = 2 ⋅5656577.

It is a cyclic number.

It is not a de Polignac number, because 45131311 - 2¹ = 45131309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45131351) 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, 1327375 + ... + 1327408.

It is an arithmetic number, because the mean of its divisors is an integer number (11946528).

Almost surely, 2^45131311 is an apocalyptic number.

45131311 is a deficient number, since it is larger than the sum of its proper divisors (2654801).

45131311 is a wasteful number, since it uses less digits than its factorization.

45131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654800.

The product of its digits is 180, while the sum is 19.

The square root of 45131311 is about 6717.9841470489. The cubic root of 45131311 is about 356.0349642678.

Adding to 45131311 its reverse (11313154), we get a palindrome (56444465).

It can be divided in two parts, 4 and 5131311, that added together give a palindrome (5131315).

The spelling of 45131311 in words is "forty-five million, one hundred thirty-one thousand, three hundred eleven".