311131100121 has 32 divisors (see below), whose sum is σ = 445181399040. Its totient is φ = 192702400704.

The previous prime is 311131100107. The next prime is 311131100149. The reversal of 311131100121 is 121001131113.

It is not a de Polignac number, because 311131100121 - 2¹¹ = 311131098073 is a prime.

It is a super-2 number, since 2×311131100121² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311131100121.

It is not an unprimeable number, because it can be changed into a prime (311131100171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 668971 + ... + 1034303.

It is an arithmetic number, because the mean of its divisors is an integer number (13911918720).

Almost surely, 2^311131100121 is an apocalyptic number.

It is an amenable number.

311131100121 is a deficient number, since it is larger than the sum of its proper divisors (134050298919).

311131100121 is a wasteful number, since it uses less digits than its factorization.

311131100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365645.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 311131100121 its reverse (121001131113), we get a palindrome (432132231234).

The spelling of 311131100121 in words is "three hundred eleven billion, one hundred thirty-one million, one hundred thousand, one hundred twenty-one".