11431601 has 2 divisors, whose sum is σ = 11431602. Its totient is φ = 11431600.

The previous prime is 11431573. The next prime is 11431603. The reversal of 11431601 is 10613411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11397376 + 34225 = 3376^2 + 185^2 .

It is an emirp because it is prime and its reverse (10613411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11431601 - 2²² = 7237297 is a prime.

Together with 11431603, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11431601.

It is not a weakly prime, because it can be changed into another prime (11431603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715800 + 5715801.

It is an arithmetic number, because the mean of its divisors is an integer number (5715801).

Almost surely, 2^11431601 is an apocalyptic number.

It is an amenable number.

11431601 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431601 is an equidigital number, since it uses as much as digits as its factorization.

11431601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 11431601 is about 3381.0650688799. The cubic root of 11431601 is about 225.2694779459.

It can be divided in two parts, 1143 and 1601, that added together give a cube (2744 = 14³).

The spelling of 11431601 in words is "eleven million, four hundred thirty-one thousand, six hundred one".