133403031 has 10 divisors (see below), whose sum is σ = 199281192. Its totient is φ = 88935300.

The previous prime is 133403027. The next prime is 133403051. The reversal of 133403031 is 130304331.

It is not a de Polignac number, because 133403031 - 2² = 133403027 is a prime.

It is a super-2 number, since 2×133403031² = 35592737359973922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133402995 and 133403013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133403021) 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 9 ways as a sum of consecutive naturals, for example, 823395 + ... + 823556.

Almost surely, 2^133403031 is an apocalyptic number.

133403031 is a deficient number, since it is larger than the sum of its proper divisors (65878161).

133403031 is an equidigital number, since it uses as much as digits as its factorization.

133403031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646963 (or 1646954 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133403031 is about 11550.0229869901. The cubic root of 133403031 is about 510.9619560552.

Adding to 133403031 its reverse (130304331), we get a palindrome (263707362).

The spelling of 133403031 in words is "one hundred thirty-three million, four hundred three thousand, thirty-one".