45031111 has 4 divisors (see below), whose sum is σ = 45665424. Its totient is φ = 44396800.

The previous prime is 45031099. The next prime is 45031139. The reversal of 45031111 is 11113054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11113054 = 2 ⋅5556527.

It is a cyclic number.

It is not a de Polignac number, because 45031111 - 2⁹ = 45030599 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 (45031141) 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, 317050 + ... + 317191.

It is an arithmetic number, because the mean of its divisors is an integer number (11416356).

Almost surely, 2^45031111 is an apocalyptic number.

45031111 is a deficient number, since it is larger than the sum of its proper divisors (634313).

45031111 is an equidigital number, since it uses as much as digits as its factorization.

45031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634312.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 45031111 is about 6710.5224088740. The cubic root of 45031111 is about 355.7712808312.

Adding to 45031111 its reverse (11113054), we get a palindrome (56144165).

The spelling of 45031111 in words is "forty-five million, thirty-one thousand, one hundred eleven".