13722431 has 2 divisors, whose sum is σ = 13722432. Its totient is φ = 13722430.

The previous prime is 13722409. The next prime is 13722469. The reversal of 13722431 is 13422731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13722431 - 2¹⁴ = 13706047 is a prime.

It is a super-2 number, since 2×13722431² = 376610225099522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13722397 and 13722406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13725431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6861215 + 6861216.

It is an arithmetic number, because the mean of its divisors is an integer number (6861216).

Almost surely, 2^13722431 is an apocalyptic number.

13722431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13722431 is an equidigital number, since it uses as much as digits as its factorization.

13722431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 13722431 is about 3704.3799751105. The cubic root of 13722431 is about 239.4107709906.

The spelling of 13722431 in words is "thirteen million, seven hundred twenty-two thousand, four hundred thirty-one".