31311001123301 has 4 divisors (see below), whose sum is σ = 31320722021004. Its totient is φ = 31301280225600.

The previous prime is 31311001123273. The next prime is 31311001123349. The reversal of 31311001123301 is 10332110011313.

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 19331199519076 + 11979801604225 = 4396726^2 + 3461185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31311001123301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311001123001) 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, 4860444020 + ... + 4860450461.

It is an arithmetic number, because the mean of its divisors is an integer number (7830180505251).

Almost surely, 2^{31311001123301} is an apocalyptic number.

It is an amenable number.

31311001123301 is a deficient number, since it is larger than the sum of its proper divisors (9720897703).

31311001123301 is an equidigital number, since it uses as much as digits as its factorization.

31311001123301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9720897702.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 31311001123301 its reverse (10332110011313), we get a palindrome (41643111134614).

The spelling of 31311001123301 in words is "thirty-one trillion, three hundred eleven billion, one million, one hundred twenty-three thousand, three hundred one".