133401136 has 40 divisors (see below), whose sum is σ = 288535104. Its totient is φ = 59223360.

The previous prime is 133401089. The next prime is 133401143. The reversal of 133401136 is 631104331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246 + ... + 16381.

Almost surely, 2^133401136 is an apocalyptic number.

133401136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133401136 is an abundant number, since it is smaller than the sum of its proper divisors (155133968).

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

133401136 is a wasteful number, since it uses less digits than its factorization.

133401136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17689 (or 17683 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 133401136 is about 11549.9409522300. The cubic root of 133401136 is about 510.9595366262.

Adding to 133401136 its reverse (631104331), we get a palindrome (764505467).

The spelling of 133401136 in words is "one hundred thirty-three million, four hundred one thousand, one hundred thirty-six".