13235881 has 2 divisors, whose sum is σ = 13235882. Its totient is φ = 13235880.

The previous prime is 13235869. The next prime is 13235903. The reversal of 13235881 is 18853231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11162281 + 2073600 = 3341^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 13235881 - 2⁷ = 13235753 is a prime.

It is a super-2 number, since 2×13235881² = 350377091692322, which contains 22 as substring.

It is equal to p₈₆₃₅₉₀ and since 13235881 and 863590 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13235801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6617940 + 6617941.

It is an arithmetic number, because the mean of its divisors is an integer number (6617941).

Almost surely, 2^13235881 is an apocalyptic number.

It is an amenable number.

13235881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13235881 is an equidigital number, since it uses as much as digits as its factorization.

13235881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 31.

The square root of 13235881 is about 3638.1150339152. The cubic root of 13235881 is about 236.5470944837.

The spelling of 13235881 in words is "thirteen million, two hundred thirty-five thousand, eight hundred eighty-one".