133403136 has 40 divisors (see below), whose sum is σ = 355398384. Its totient is φ = 44467200.

The previous prime is 133403129. The next prime is 133403143. The reversal of 133403136 is 631304331.

It is an interprime number because it is at equal distance from previous prime (133403129) and next prime (133403143).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41890 + ... + 44961.

Almost surely, 2^133403136 is an apocalyptic number.

133403136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133403136 is an abundant number, since it is smaller than the sum of its proper divisors (221995248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133403136 is an frugal number, since it uses more digits than its factorization.

133403136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86872 (or 86856 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 133403136 is about 11550.0275324347. The cubic root of 133403136 is about 510.9620901126.

Adding to 133403136 its reverse (631304331), we get a palindrome (764707467).

The spelling of 133403136 in words is "one hundred thirty-three million, four hundred three thousand, one hundred thirty-six".