31113444132101 has 4 divisors (see below), whose sum is σ = 31113639853932. Its totient is φ = 31113248410272.

The previous prime is 31113444132049. The next prime is 31113444132109. The reversal of 31113444132101 is 10123144431113.

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 1935632212900 + 29177811919201 = 1391270^2 + 5401649^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113444132101 - 2⁶ = 31113444132037 is a prime.

It is a super-2 number, since 2×31113444132101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113444132109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97622270 + ... + 97940463.

It is an arithmetic number, because the mean of its divisors is an integer number (7778409963483).

Almost surely, 2^{31113444132101} is an apocalyptic number.

It is an amenable number.

31113444132101 is a deficient number, since it is larger than the sum of its proper divisors (195721831).

31113444132101 is a wasteful number, since it uses less digits than its factorization.

31113444132101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195721830.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 31113444132101 its reverse (10123144431113), we get a palindrome (41236588563214).

The spelling of 31113444132101 in words is "thirty-one trillion, one hundred thirteen billion, four hundred forty-four million, one hundred thirty-two thousand, one hundred one".