133031545 has 16 divisors (see below), whose sum is σ = 171805968. Its totient is φ = 98519040.

The previous prime is 133031543. The next prime is 133031567. The reversal of 133031545 is 545130331.

It can be written as a sum of positive squares in 8 ways, for example, as 13719616 + 119311929 = 3704^2 + 10923^2 .

It is not a de Polignac number, because 133031545 - 2¹ = 133031543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133031543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7644 + ... + 18013.

It is an arithmetic number, because the mean of its divisors is an integer number (10737873).

Almost surely, 2^133031545 is an apocalyptic number.

It is an amenable number.

133031545 is a deficient number, since it is larger than the sum of its proper divisors (38774423).

133031545 is a wasteful number, since it uses less digits than its factorization.

133031545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25740.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 133031545 is about 11533.9301627849. The cubic root of 133031545 is about 510.4872250165.

Adding to 133031545 its reverse (545130331), we get a palindrome (678161876).

The spelling of 133031545 in words is "one hundred thirty-three million, thirty-one thousand, five hundred forty-five".