31001200001 has 4 divisors (see below), whose sum is σ = 31137769392. Its totient is φ = 30864630612.

The previous prime is 31001199967. The next prime is 31001200031. The reversal of 31001200001 is 10000210013.

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 31001200001 - 2⁶ = 31001199937 is a prime.

It is a super-2 number, since 2×31001200001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31001200031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68284355 + ... + 68284808.

It is an arithmetic number, because the mean of its divisors is an integer number (7784442348).

Almost surely, 2^31001200001 is an apocalyptic number.

It is an amenable number.

31001200001 is a deficient number, since it is larger than the sum of its proper divisors (136569391).

31001200001 is a wasteful number, since it uses less digits than its factorization.

31001200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136569390.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 31001200001 its reverse (10000210013), we get a palindrome (41001410014).

The spelling of 31001200001 in words is "thirty-one billion, one million, two hundred thousand, one".