31013212012001 has 4 divisors (see below), whose sum is σ = 31054952540352. Its totient is φ = 30971471483652.

The previous prime is 31013212011989. The next prime is 31013212012009. The reversal of 31013212012001 is 10021021231013.

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 31013212012001 - 2³⁰ = 31012138270177 is a prime.

It is a super-2 number, since 2×31013212012001² (a number of 28 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 (31013212012009) 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, 20870263061 + ... + 20870264546.

It is an arithmetic number, because the mean of its divisors is an integer number (7763738135088).

Almost surely, 2^{31013212012001} is an apocalyptic number.

It is an amenable number.

31013212012001 is a deficient number, since it is larger than the sum of its proper divisors (41740528351).

31013212012001 is an equidigital number, since it uses as much as digits as its factorization.

31013212012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41740528350.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31013212012001 its reverse (10021021231013), we get a palindrome (41034233243014).

The spelling of 31013212012001 in words is "thirty-one trillion, thirteen billion, two hundred twelve million, twelve thousand, one".