133601403 has 32 divisors (see below), whose sum is σ = 196618240. Its totient is φ = 80196480.

The previous prime is 133601399. The next prime is 133601423. The reversal of 133601403 is 304106331.

It is not a de Polignac number, because 133601403 - 2² = 133601399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133601403.

It is not an unprimeable number, because it can be changed into a prime (133601423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317133 + ... + 317553.

It is an arithmetic number, because the mean of its divisors is an integer number (6144320).

Almost surely, 2^133601403 is an apocalyptic number.

133601403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133601403 is a deficient number, since it is larger than the sum of its proper divisors (63016837).

133601403 is a wasteful number, since it uses less digits than its factorization.

133601403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 133601403 is about 11558.6073123019. The cubic root of 133601403 is about 511.2150995917.

Adding to 133601403 its reverse (304106331), we get a palindrome (437707734).

The spelling of 133601403 in words is "one hundred thirty-three million, six hundred one thousand, four hundred three".