31201200133 has 4 divisors (see below), whose sum is σ = 31640653728. Its totient is φ = 30761746540.

The previous prime is 31201200103. The next prime is 31201200161. The reversal of 31201200133 is 33100210213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31201200133 - 2²⁹ = 30664329221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201200103) 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, 219726691 + ... + 219726832.

It is an arithmetic number, because the mean of its divisors is an integer number (7910163432).

Almost surely, 2^31201200133 is an apocalyptic number.

It is an amenable number.

31201200133 is a deficient number, since it is larger than the sum of its proper divisors (439453595).

31201200133 is an equidigital number, since it uses as much as digits as its factorization.

31201200133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439453594.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31201200133 its reverse (33100210213), we get a palindrome (64301410346).

The spelling of 31201200133 in words is "thirty-one billion, two hundred one million, two hundred thousand, one hundred thirty-three".