31001120133 has 4 divisors (see below), whose sum is σ = 41334826848. Its totient is φ = 20667413420.

The previous prime is 31001120131. The next prime is 31001120159. The reversal of 31001120133 is 33102110013.

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 31001120133 - 2¹ = 31001120131 is a prime.

It is a super-2 number, since 2×31001120133² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31001120131) 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, 5166853353 + ... + 5166853358.

It is an arithmetic number, because the mean of its divisors is an integer number (10333706712).

Almost surely, 2^31001120133 is an apocalyptic number.

It is an amenable number.

31001120133 is a deficient number, since it is larger than the sum of its proper divisors (10333706715).

31001120133 is a wasteful number, since it uses less digits than its factorization.

31001120133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10333706714.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31001120133 its reverse (33102110013), we get a palindrome (64103230146).

The spelling of 31001120133 in words is "thirty-one billion, one million, one hundred twenty thousand, one hundred thirty-three".