133011031 has 4 divisors (see below), whose sum is σ = 133173864. Its totient is φ = 132848200.

The previous prime is 133011019. The next prime is 133011059. The reversal of 133011031 is 130110331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130110331 = 13 ⋅10008487.

It is a cyclic number.

It is not a de Polignac number, because 133011031 - 2¹¹ = 133008983 is a prime.

It is a super-2 number, since 2×133011031² = 35383868735365922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133011061) 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, 80185 + ... + 81826.

It is an arithmetic number, because the mean of its divisors is an integer number (33293466).

Almost surely, 2^133011031 is an apocalyptic number.

133011031 is a deficient number, since it is larger than the sum of its proper divisors (162833).

133011031 is an equidigital number, since it uses as much as digits as its factorization.

133011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162832.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 133011031 is about 11533.0408392583. The cubic root of 133011031 is about 510.4609839390.

Adding to 133011031 its reverse (130110331), we get a palindrome (263121362).

The spelling of 133011031 in words is "one hundred thirty-three million, eleven thousand, thirty-one".