31023320302201 has 4 divisors (see below), whose sum is σ = 31371896934900. Its totient is φ = 30674743669504.

The previous prime is 31023320302157. The next prime is 31023320302211. The reversal of 31023320302201 is 10220302332013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19006975370601 + 12016344931600 = 4359699^2 + 3466460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023320302201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31023320302211) 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, 174288316216 + ... + 174288316393.

It is an arithmetic number, because the mean of its divisors is an integer number (7842974233725).

Almost surely, 2^{31023320302201} is an apocalyptic number.

It is an amenable number.

31023320302201 is a deficient number, since it is larger than the sum of its proper divisors (348576632699).

31023320302201 is an equidigital number, since it uses as much as digits as its factorization.

31023320302201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348576632698.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31023320302201 its reverse (10220302332013), we get a palindrome (41243622634214).

The spelling of 31023320302201 in words is "thirty-one trillion, twenty-three billion, three hundred twenty million, three hundred two thousand, two hundred one".