31012002212001 has 4 divisors (see below), whose sum is σ = 41349336282672. Its totient is φ = 20674668141332.

The previous prime is 31012002211997. The next prime is 31012002212021. The reversal of 31012002212001 is 10021220021013.

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 31012002212001 - 2² = 31012002211997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31012002212021) 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, 5168667035331 + ... + 5168667035336.

It is an arithmetic number, because the mean of its divisors is an integer number (10337334070668).

Almost surely, 2^{31012002212001} is an apocalyptic number.

It is an amenable number.

31012002212001 is a deficient number, since it is larger than the sum of its proper divisors (10337334070671).

31012002212001 is a wasteful number, since it uses less digits than its factorization.

31012002212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10337334070670.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 31012002212001 its reverse (10021220021013), we get a palindrome (41033222233014).

The spelling of 31012002212001 in words is "thirty-one trillion, twelve billion, two million, two hundred twelve thousand, one".