1722431 has 2 divisors, whose sum is σ = 1722432. Its totient is φ = 1722430.

The previous prime is 1722419. The next prime is 1722443. The reversal of 1722431 is 1342271.

It is a balanced prime because it is at equal distance from previous prime (1722419) and next prime (1722443).

It is a cyclic number.

It is not a de Polignac number, because 1722431 - 2¹⁰ = 1721407 is a prime.

It is a super-2 number, since 2×1722431² = 5933537099522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1722481) 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, 861215 + 861216.

It is an arithmetic number, because the mean of its divisors is an integer number (861216).

2^1722431 is an apocalyptic number.

1722431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722431 is an equidigital number, since it uses as much as digits as its factorization.

1722431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 20.

The square root of 1722431 is about 1312.4141876710. The cubic root of 1722431 is about 119.8709492285.

The spelling of 1722431 in words is "one million, seven hundred twenty-two thousand, four hundred thirty-one".