43131045 has 16 divisors (see below), whose sum is σ = 72642240. Its totient is φ = 21792384.

The previous prime is 43131043. The next prime is 43131079. The reversal of 43131045 is 54013134.

It is not a de Polignac number, because 43131045 - 2¹ = 43131043 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43131041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75384 + ... + 75953.

It is an arithmetic number, because the mean of its divisors is an integer number (4540140).

Almost surely, 2^43131045 is an apocalyptic number.

It is an amenable number.

43131045 is a deficient number, since it is larger than the sum of its proper divisors (29511195).

43131045 is a wasteful number, since it uses less digits than its factorization.

43131045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151364.

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

The square root of 43131045 is about 6567.4230105879. The cubic root of 43131045 is about 350.6953387565.

Adding to 43131045 its reverse (54013134), we get a palindrome (97144179).

The spelling of 43131045 in words is "forty-three million, one hundred thirty-one thousand, forty-five".