31312023311101 has 4 divisors (see below), whose sum is σ = 33720640488892. Its totient is φ = 28903406133312.

The previous prime is 31312023311089. The next prime is 31312023311123. The reversal of 31312023311101 is 10111332021313.

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 1426175739076 + 29885847572025 = 1194226^2 + 5466795^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312023311101 - 2¹¹ = 31312023309053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312023311801) 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, 1204308588876 + ... + 1204308588901.

It is an arithmetic number, because the mean of its divisors is an integer number (8430160122223).

Almost surely, 2^{31312023311101} is an apocalyptic number.

It is an amenable number.

31312023311101 is a deficient number, since it is larger than the sum of its proper divisors (2408617177791).

31312023311101 is a wasteful number, since it uses less digits than its factorization.

31312023311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408617177790.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31312023311101 its reverse (10111332021313), we get a palindrome (41423355332414).

The spelling of 31312023311101 in words is "thirty-one trillion, three hundred twelve billion, twenty-three million, three hundred eleven thousand, one hundred one".