13065631 has 8 divisors (see below), whose sum is σ = 13590720. Its totient is φ = 12545568.

The previous prime is 13065629. The next prime is 13065643. The reversal of 13065631 is 13656031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13065631 - 2¹ = 13065629 is a prime.

It is a super-2 number, since 2×13065631² = 341421426856322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13065596 and 13065605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13065131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4570 + ... + 6856.

It is an arithmetic number, because the mean of its divisors is an integer number (1698840).

Almost surely, 2^13065631 is an apocalyptic number.

13065631 is a deficient number, since it is larger than the sum of its proper divisors (525089).

13065631 is a wasteful number, since it uses less digits than its factorization.

13065631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 13065631 is about 3614.6411993447. The cubic root of 13065631 is about 235.5284981958.

The spelling of 13065631 in words is "thirteen million, sixty-five thousand, six hundred thirty-one".