4131551321 has 2 divisors, whose sum is σ = 4131551322. Its totient is φ = 4131551320.

The previous prime is 4131551299. The next prime is 4131551339. The reversal of 4131551321 is 1231551314.

4131551321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3771310921 + 360240400 = 61411^2 + 18980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4131551321 is a prime.

It is not a weakly prime, because it can be changed into another prime (4131551351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065775660 + 2065775661.

It is an arithmetic number, because the mean of its divisors is an integer number (2065775661).

Almost surely, 2^4131551321 is an apocalyptic number.

It is an amenable number.

4131551321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4131551321 is an equidigital number, since it uses as much as digits as its factorization.

4131551321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 4131551321 is about 64277.1446238863. The cubic root of 4131551321 is about 1604.6157497346.

The spelling of 4131551321 in words is "four billion, one hundred thirty-one million, five hundred fifty-one thousand, three hundred twenty-one".