13103031 has 16 divisors (see below), whose sum is σ = 18579456. Its totient is φ = 8195616.

The previous prime is 13103023. The next prime is 13103047. The reversal of 13103031 is 13030131.

It is not a de Polignac number, because 13103031 - 2³ = 13103023 is a prime.

It is a super-2 number, since 2×13103031² = 343378842773922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13102998 and 13103016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1866 + ... + 5448.

It is an arithmetic number, because the mean of its divisors is an integer number (1161216).

Almost surely, 2^13103031 is an apocalyptic number.

13103031 is a deficient number, since it is larger than the sum of its proper divisors (5476425).

13103031 is a wasteful number, since it uses less digits than its factorization.

13103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 13103031 is about 3619.8109066635. The cubic root of 13103031 is about 235.7530153336.

Adding to 13103031 its reverse (13030131), we get a palindrome (26133162).

Subtracting from 13103031 its reverse (13030131), we obtain a square (72900 = 270²).

The spelling of 13103031 in words is "thirteen million, one hundred three thousand, thirty-one".