45120311 has 4 divisors (see below), whose sum is σ = 45144000. Its totient is φ = 45096624.

The previous prime is 45120281. The next prime is 45120323. The reversal of 45120311 is 11302154.

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 45120311 - 2¹⁸ = 44858167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45120311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45120371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8711 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (11286000).

Almost surely, 2^45120311 is an apocalyptic number.

45120311 is a deficient number, since it is larger than the sum of its proper divisors (23689).

45120311 is a wasteful number, since it uses less digits than its factorization.

45120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23688.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 45120311 is about 6717.1653991844. The cubic root of 45120311 is about 356.0060360673.

Adding to 45120311 its reverse (11302154), we get a palindrome (56422465).

The spelling of 45120311 in words is "forty-five million, one hundred twenty thousand, three hundred eleven".