133312019 has 4 divisors (see below), whose sum is σ = 134329800. Its totient is φ = 132294240.

The previous prime is 133311991. The next prime is 133312051. The reversal of 133312019 is 910213331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910213331 = 8929 ⋅101939.

It is a cyclic number.

It is not a de Polignac number, because 133312019 - 2¹⁶ = 133246483 is a prime.

It is a super-2 number, since 2×133312019² = 35544188819712722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133311985 and 133312003.

It is not an unprimeable number, because it can be changed into a prime (133312099) 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, 508694 + ... + 508955.

It is an arithmetic number, because the mean of its divisors is an integer number (33582450).

Almost surely, 2^133312019 is an apocalyptic number.

133312019 is a deficient number, since it is larger than the sum of its proper divisors (1017781).

133312019 is a wasteful number, since it uses less digits than its factorization.

133312019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017780.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 133312019 is about 11546.0824091984. The cubic root of 133312019 is about 510.8457311872.

The spelling of 133312019 in words is "one hundred thirty-three million, three hundred twelve thousand, nineteen".