3101121131 has 4 divisors (see below), whose sum is σ = 3101424264. Its totient is φ = 3100818000.

The previous prime is 3101121109. The next prime is 3101121151. The reversal of 3101121131 is 1311211013.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3101121131 is a prime.

It is a super-2 number, since 2×3101121131² = 19233904538269438322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3101121151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135665 + ... + 156866.

It is an arithmetic number, because the mean of its divisors is an integer number (775356066).

Almost surely, 2^3101121131 is an apocalyptic number.

3101121131 is a deficient number, since it is larger than the sum of its proper divisors (303133).

3101121131 is a wasteful number, since it uses less digits than its factorization.

3101121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303132.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 3101121131 is about 55687.7107717672. The cubic root of 3101121131 is about 1458.2754910725.

Adding to 3101121131 its reverse (1311211013), we get a palindrome (4412332144).

The spelling of 3101121131 in words is "three billion, one hundred one million, one hundred twenty-one thousand, one hundred thirty-one".