4207121131 has 4 divisors (see below), whose sum is σ = 4208315472. Its totient is φ = 4205926792.

The previous prime is 4207121129. The next prime is 4207121137. The reversal of 4207121131 is 1311217024.

It is a happy number.

4207121131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4207121131 - 2¹ = 4207121129 is a prime.

It is a super-2 number, since 2×4207121131² = 35399736421813438322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4207121137) 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, 591871 + ... + 598936.

It is an arithmetic number, because the mean of its divisors is an integer number (1052078868).

Almost surely, 2^4207121131 is an apocalyptic number.

4207121131 is a deficient number, since it is larger than the sum of its proper divisors (1194341).

4207121131 is a wasteful number, since it uses less digits than its factorization.

4207121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194340.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 4207121131 is about 64862.3244341428. The cubic root of 4207121131 is about 1614.3399912136.

Adding to 4207121131 its reverse (1311217024), we get a palindrome (5518338155).

The spelling of 4207121131 in words is "four billion, two hundred seven million, one hundred twenty-one thousand, one hundred thirty-one".