11431613 has 2 divisors, whose sum is σ = 11431614. Its totient is φ = 11431612.

The previous prime is 11431603. The next prime is 11431619. The reversal of 11431613 is 31613411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8602489 + 2829124 = 2933^2 + 1682^2 .

It is an emirp because it is prime and its reverse (31613411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11431613 - 2⁶ = 11431549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11431619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715806 + 5715807.

It is an arithmetic number, because the mean of its divisors is an integer number (5715807).

Almost surely, 2^11431613 is an apocalyptic number.

It is an amenable number.

11431613 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431613 is an equidigital number, since it uses as much as digits as its factorization.

11431613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 20.

The square root of 11431613 is about 3381.0668434682. The cubic root of 11431613 is about 225.2695567693.

The spelling of 11431613 in words is "eleven million, four hundred thirty-one thousand, six hundred thirteen".