4051631 has 2 divisors, whose sum is σ = 4051632. Its totient is φ = 4051630.

The previous prime is 4051613. The next prime is 4051633. The reversal of 4051631 is 1361504.

Together with previous prime (4051613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4051631 is a prime.

It is a super-2 number, since 2×4051631² = 32831427520322, which contains 22 as substring.

Together with 4051633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4051633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025815 + 2025816.

It is an arithmetic number, because the mean of its divisors is an integer number (2025816).

Almost surely, 2^4051631 is an apocalyptic number.

4051631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4051631 is an equidigital number, since it uses as much as digits as its factorization.

4051631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 4051631 is about 2012.8663641683. The cubic root of 4051631 is about 159.4201799887.

The spelling of 4051631 in words is "four million, fifty-one thousand, six hundred thirty-one".