133320031 has 4 divisors (see below), whose sum is σ = 143575432. Its totient is φ = 123064632.

The previous prime is 133319993. The next prime is 133320049. The reversal of 133320031 is 130023331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130023331 = 31 ⋅4194301.

It is a cyclic number.

It is not a de Polignac number, because 133320031 - 2¹¹ = 133317983 is a prime.

It is a super-2 number, since 2×133320031² = 35548461331681922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133319987 and 133320014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133320071) 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, 5127681 + ... + 5127706.

It is an arithmetic number, because the mean of its divisors is an integer number (35893858).

Almost surely, 2^133320031 is an apocalyptic number.

133320031 is a deficient number, since it is larger than the sum of its proper divisors (10255401).

133320031 is a wasteful number, since it uses less digits than its factorization.

133320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255400.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 133320031 is about 11546.4293614953. The cubic root of 133320031 is about 510.8559648582.

Adding to 133320031 its reverse (130023331), we get a palindrome (263343362).

The spelling of 133320031 in words is "one hundred thirty-three million, three hundred twenty thousand, thirty-one".