31302020111201 has 4 divisors (see below), whose sum is σ = 35773737269952. Its totient is φ = 26830302952452.

The previous prime is 31302020111183. The next prime is 31302020111261. The reversal of 31302020111201 is 10211102020313.

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 31302020111201 - 2⁶ = 31302020111137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31302020111201.

It is not an unprimeable number, because it can be changed into a prime (31302020111261) 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, 2235858579365 + ... + 2235858579378.

It is an arithmetic number, because the mean of its divisors is an integer number (8943434317488).

Almost surely, 2^{31302020111201} is an apocalyptic number.

It is an amenable number.

31302020111201 is a deficient number, since it is larger than the sum of its proper divisors (4471717158751).

31302020111201 is an equidigital number, since it uses as much as digits as its factorization.

31302020111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471717158750.

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

Adding to 31302020111201 its reverse (10211102020313), we get a palindrome (41513122131514).

The spelling of 31302020111201 in words is "thirty-one trillion, three hundred two billion, twenty million, one hundred eleven thousand, two hundred one".