133504373 has 4 divisors (see below), whose sum is σ = 133776768. Its totient is φ = 133231980.

The previous prime is 133504367. The next prime is 133504381. The reversal of 133504373 is 373405331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133504373 - 2⁸ = 133504117 is a prime.

It is a super-2 number, since 2×133504373² = 35646835220246258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133504363) 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, 135461 + ... + 136442.

It is an arithmetic number, because the mean of its divisors is an integer number (33444192).

Almost surely, 2^133504373 is an apocalyptic number.

It is an amenable number.

133504373 is a deficient number, since it is larger than the sum of its proper divisors (272395).

133504373 is an equidigital number, since it uses as much as digits as its factorization.

133504373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272394.

The product of its (nonzero) digits is 11340, while the sum is 29.

The square root of 133504373 is about 11554.4092449593. The cubic root of 133504373 is about 511.0913104368.

The spelling of 133504373 in words is "one hundred thirty-three million, five hundred four thousand, three hundred seventy-three".