31133130101 has 4 divisors (see below), whose sum is σ = 31133623872. Its totient is φ = 31132636332.

The previous prime is 31133130031. The next prime is 31133130103. The reversal of 31133130101 is 10103133113.

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 a de Polignac number, because none of the positive numbers 2^k-31133130101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31133130101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133130103) 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, 135581 + ... + 283986.

It is an arithmetic number, because the mean of its divisors is an integer number (7783405968).

Almost surely, 2^31133130101 is an apocalyptic number.

It is an amenable number.

31133130101 is a deficient number, since it is larger than the sum of its proper divisors (493771).

31133130101 is an equidigital number, since it uses as much as digits as its factorization.

31133130101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493770.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 31133130101 its reverse (10103133113), we get a palindrome (41236263214).

The spelling of 31133130101 in words is "thirty-one billion, one hundred thirty-three million, one hundred thirty thousand, one hundred one".