2311013121 has 16 divisors (see below), whose sum is σ = 3134347008. Its totient is φ = 1514217600.

The previous prime is 2311013119. The next prime is 2311013123. The reversal of 2311013121 is 1213101132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2311013119) and next prime (2311013123).

It is not a de Polignac number, because 2311013121 - 2¹ = 2311013119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2311013121.

It is not an unprimeable number, because it can be changed into a prime (2311013123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266760 + ... + 275286.

It is an arithmetic number, because the mean of its divisors is an integer number (195896688).

Almost surely, 2^2311013121 is an apocalyptic number.

It is an amenable number.

2311013121 is a deficient number, since it is larger than the sum of its proper divisors (823333887).

2311013121 is a wasteful number, since it uses less digits than its factorization.

2311013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2311013121 is about 48072.9978366234. The cubic root of 2311013121 is about 1322.1096356335.

Adding to 2311013121 its reverse (1213101132), we get a palindrome (3524114253).

The spelling of 2311013121 in words is "two billion, three hundred eleven million, thirteen thousand, one hundred twenty-one".