13231071 has 24 divisors (see below), whose sum is σ = 22064640. Its totient is φ = 7483536.

The previous prime is 13231067. The next prime is 13231103. The reversal of 13231071 is 17013231.

It is not a de Polignac number, because 13231071 - 2² = 13231067 is a prime.

It is a super-2 number, since 2×13231071² = 350122479614082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5470 + ... + 7508.

It is an arithmetic number, because the mean of its divisors is an integer number (919360).

Almost surely, 2^13231071 is an apocalyptic number.

13231071 is a deficient number, since it is larger than the sum of its proper divisors (8833569).

13231071 is a wasteful number, since it uses less digits than its factorization.

13231071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 13231071 is about 3637.4539172339. The cubic root of 13231071 is about 236.5184367923.

The spelling of 13231071 in words is "thirteen million, two hundred thirty-one thousand, seventy-one".