133031003 has 4 divisors (see below), whose sum is σ = 152035440. Its totient is φ = 114026568.

The previous prime is 133030957. The next prime is 133031051. The reversal of 133031003 is 300130331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133031003 - 2⁶ = 133030939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133031053) 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, 9502208 + ... + 9502221.

It is an arithmetic number, because the mean of its divisors is an integer number (38008860).

Almost surely, 2^133031003 is an apocalyptic number.

133031003 is a deficient number, since it is larger than the sum of its proper divisors (19004437).

133031003 is an equidigital number, since it uses as much as digits as its factorization.

133031003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19004436.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 133031003 is about 11533.9066668670. The cubic root of 133031003 is about 510.4865317362.

Adding to 133031003 its reverse (300130331), we get a palindrome (433161334).

The spelling of 133031003 in words is "one hundred thirty-three million, thirty-one thousand, three".