13120511 has 8 divisors (see below), whose sum is σ = 13834464. Its totient is φ = 12418560.

The previous prime is 13120489. The next prime is 13120517. The reversal of 13120511 is 11502131.

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 13120511 - 2¹⁸ = 12858367 is a prime.

It is a super-2 number, since 2×13120511² = 344295617802242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120517) 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, 710 + ... + 5171.

It is an arithmetic number, because the mean of its divisors is an integer number (1729308).

Almost surely, 2^13120511 is an apocalyptic number.

13120511 is a deficient number, since it is larger than the sum of its proper divisors (713953).

13120511 is an equidigital number, since it uses as much as digits as its factorization.

13120511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 13120511 is about 3622.2245927054. The cubic root of 13120511 is about 235.8578035960.

Adding to 13120511 its reverse (11502131), we get a palindrome (24622642).

It can be divided in two parts, 13120 and 511, that added together give a palindrome (13631).

The spelling of 13120511 in words is "thirteen million, one hundred twenty thousand, five hundred eleven".