133100031 has 8 divisors (see below), whose sum is σ = 177574960. Its totient is φ = 88679232.

The previous prime is 133100017. The next prime is 133100039. The reversal of 133100031 is 130001331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133100031 - 2¹³ = 133091839 is a prime.

It is a super-2 number, since 2×133100031² = 35431236504401922, 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 (133100039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7396 + ... + 17913.

It is an arithmetic number, because the mean of its divisors is an integer number (22196870).

Almost surely, 2^133100031 is an apocalyptic number.

133100031 is a deficient number, since it is larger than the sum of its proper divisors (44474929).

133100031 is a wasteful number, since it uses less digits than its factorization.

133100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27065.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 133100031 is about 11536.8986733871. The cubic root of 133100031 is about 510.5748113363.

Adding to 133100031 its reverse (130001331), we get a palindrome (263101362).

The spelling of 133100031 in words is "one hundred thirty-three million, one hundred thousand, thirty-one".