13121310 has 32 divisors (see below), whose sum is σ = 32344992. Its totient is φ = 3404160.

The previous prime is 13121309. The next prime is 13121327. The reversal of 13121310 is 1312131.

13121310 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13121310² = 344337552232200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4801 + ... + 7020.

It is an arithmetic number, because the mean of its divisors is an integer number (1010781).

Almost surely, 2^13121310 is an apocalyptic number.

13121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121310 is an abundant number, since it is smaller than the sum of its proper divisors (19223682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121310 is a wasteful number, since it uses less digits than its factorization.

13121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11868.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 13121310 is about 3622.3348823652. The cubic root of 13121310 is about 235.8625911778.

Adding to 13121310 its reverse (1312131), we get a palindrome (14433441).

It can be divided in two parts, 13121 and 310, that added together give a palindrome (13431).

The spelling of 13121310 in words is "thirteen million, one hundred twenty-one thousand, three hundred ten".