133301431 has 4 divisors (see below), whose sum is σ = 135127552. Its totient is φ = 131475312.

The previous prime is 133301423. The next prime is 133301453. The reversal of 133301431 is 134103331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134103331 = 89 ⋅1506779.

It is a cyclic number.

It is not a de Polignac number, because 133301431 - 2³ = 133301423 is a prime.

It is a super-2 number, since 2×133301431² = 35538543013295522, 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 = 133301399 and 133301408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133301401) 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, 912951 + ... + 913096.

It is an arithmetic number, because the mean of its divisors is an integer number (33781888).

Almost surely, 2^133301431 is an apocalyptic number.

133301431 is a deficient number, since it is larger than the sum of its proper divisors (1826121).

133301431 is an equidigital number, since it uses as much as digits as its factorization.

133301431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826120.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 133301431 is about 11545.6238895956. The cubic root of 133301431 is about 510.8322065807.

Adding to 133301431 its reverse (134103331), we get a palindrome (267404762).

The spelling of 133301431 in words is "one hundred thirty-three million, three hundred one thousand, four hundred thirty-one".