4321931 has 2 divisors, whose sum is σ = 4321932. Its totient is φ = 4321930.

The previous prime is 4321901. The next prime is 4321981. The reversal of 4321931 is 1391234.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4321931 is a prime.

It is a super-2 number, since 2×4321931² = 37358175137522, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4321897 and 4321906.

It is not a weakly prime, because it can be changed into another prime (4321901) 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, 2160965 + 2160966.

It is an arithmetic number, because the mean of its divisors is an integer number (2160966).

Almost surely, 2^4321931 is an apocalyptic number.

4321931 is a deficient number, since it is larger than the sum of its proper divisors (1).

4321931 is an equidigital number, since it uses as much as digits as its factorization.

4321931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

The square root of 4321931 is about 2078.9254435886. The cubic root of 4321931 is about 162.8893197718.

The spelling of 4321931 in words is "four million, three hundred twenty-one thousand, nine hundred thirty-one".