45043131 has 16 divisors (see below), whose sum is σ = 71622144. Its totient is φ = 24619584.

The previous prime is 45043123. The next prime is 45043139. The reversal of 45043131 is 13134054.

It is an interprime number because it is at equal distance from previous prime (45043123) and next prime (45043139).

It is not a de Polignac number, because 45043131 - 2³ = 45043123 is a prime.

It is a super-2 number, since 2×45043131² = 4057767300566322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 45043098 and 45043107.

It is not an unprimeable number, because it can be changed into a prime (45043139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46146 + ... + 47111.

It is an arithmetic number, because the mean of its divisors is an integer number (4476384).

Almost surely, 2^45043131 is an apocalyptic number.

45043131 is a deficient number, since it is larger than the sum of its proper divisors (26579013).

45043131 is a wasteful number, since it uses less digits than its factorization.

45043131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93290.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 45043131 is about 6711.4179574811. The cubic root of 45043131 is about 355.8029329510.

Adding to 45043131 its reverse (13134054), we get a palindrome (58177185).

The spelling of 45043131 in words is "forty-five million, forty-three thousand, one hundred thirty-one".