31120311102101 has 8 divisors (see below), whose sum is σ = 33516353839584. Its totient is φ = 28724578743600.

The previous prime is 31120311102061. The next prime is 31120311102107. The reversal of 31120311102101 is 10120111302113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31120311102101 is a prime.

It is a super-2 number, since 2×31120311102101² (a number of 28 digits) contains 22 as substring.

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 31120311102101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120311102107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77386475 + ... + 77787576.

It is an arithmetic number, because the mean of its divisors is an integer number (4189544229948).

Almost surely, 2^{31120311102101} is an apocalyptic number.

It is an amenable number.

31120311102101 is a deficient number, since it is larger than the sum of its proper divisors (2396042737483).

31120311102101 is a wasteful number, since it uses less digits than its factorization.

31120311102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155189491.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 31120311102101 its reverse (10120111302113), we get a palindrome (41240422404214).

The spelling of 31120311102101 in words is "thirty-one trillion, one hundred twenty billion, three hundred eleven million, one hundred two thousand, one hundred one".