3872731 has 2 divisors, whose sum is σ = 3872732. Its totient is φ = 3872730.

The previous prime is 3872681. The next prime is 3872761. The reversal of 3872731 is 1372783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3872731 - 2¹⁵ = 3839963 is a prime.

It is a super-2 number, since 2×3872731² = 29996090796722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3872693 and 3872702.

It is not a weakly prime, because it can be changed into another prime (3872761) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1936365 + 1936366.

It is an arithmetic number, because the mean of its divisors is an integer number (1936366).

Almost surely, 2^3872731 is an apocalyptic number.

3872731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3872731 is an equidigital number, since it uses as much as digits as its factorization.

3872731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 3872731 is about 1967.9255575351. The cubic root of 3872731 is about 157.0383694610.

The spelling of 3872731 in words is "three million, eight hundred seventy-two thousand, seven hundred thirty-one".