4640131 has 2 divisors, whose sum is σ = 4640132. Its totient is φ = 4640130.

The previous prime is 4640117. The next prime is 4640137. The reversal of 4640131 is 1310464.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4640131 - 2⁷ = 4640003 is a prime.

It is a super-2 number, since 2×4640131² = 43061631394322, which contains 22 as substring.

It is an Ulam number.

4640131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4640099 and 4640108.

It is not a weakly prime, because it can be changed into another prime (4640137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2320065 + 2320066.

It is an arithmetic number, because the mean of its divisors is an integer number (2320066).

Almost surely, 2^4640131 is an apocalyptic number.

4640131 is a deficient number, since it is larger than the sum of its proper divisors (1).

4640131 is an equidigital number, since it uses as much as digits as its factorization.

4640131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4640131 is about 2154.0963302508. The cubic root of 4640131 is about 166.7925879501.

Adding to 4640131 its reverse (1310464), we get a palindrome (5950595).

The spelling of 4640131 in words is "four million, six hundred forty thousand, one hundred thirty-one".