13423831 has 2 divisors, whose sum is σ = 13423832. Its totient is φ = 13423830.

The previous prime is 13423793. The next prime is 13423847. The reversal of 13423831 is 13832431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13423831 - 2¹¹ = 13421783 is a prime.

It is a super-2 number, since 2×13423831² = 360398477433122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13423796 and 13423805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13423231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6711915 + 6711916.

It is an arithmetic number, because the mean of its divisors is an integer number (6711916).

Almost surely, 2^13423831 is an apocalyptic number.

13423831 is a deficient number, since it is larger than the sum of its proper divisors (1).

13423831 is an equidigital number, since it uses as much as digits as its factorization.

13423831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 13423831 is about 3663.8546641481. The cubic root of 13423831 is about 237.6614953323.

The spelling of 13423831 in words is "thirteen million, four hundred twenty-three thousand, eight hundred thirty-one".