45111431 has 2 divisors, whose sum is σ = 45111432. Its totient is φ = 45111430.

The previous prime is 45111419. The next prime is 45111461. The reversal of 45111431 is 13411154.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45111431 is a prime.

It is a super-2 number, since 2×45111431² = 4070082413735522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45111461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22555715 + 22555716.

It is an arithmetic number, because the mean of its divisors is an integer number (22555716).

Almost surely, 2^45111431 is an apocalyptic number.

45111431 is a deficient number, since it is larger than the sum of its proper divisors (1).

45111431 is an equidigital number, since it uses as much as digits as its factorization.

45111431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 20.

The square root of 45111431 is about 6716.5043735562. The cubic root of 45111431 is about 355.9826796901.

Adding to 45111431 its reverse (13411154), we get a palindrome (58522585).

The spelling of 45111431 in words is "forty-five million, one hundred eleven thousand, four hundred thirty-one".