13431078 has 12 divisors (see below), whose sum is σ = 29100708. Its totient is φ = 4477020.

The previous prime is 13431059. The next prime is 13431109. The reversal of 13431078 is 87013431.

13431078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 373068 + ... + 373103.

It is an arithmetic number, because the mean of its divisors is an integer number (2425059).

Almost surely, 2^13431078 is an apocalyptic number.

13431078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13431078 is an abundant number, since it is smaller than the sum of its proper divisors (15669630).

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

13431078 is a wasteful number, since it uses less digits than its factorization.

13431078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746179 (or 746176 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13431078 is about 3664.8435164410. The cubic root of 13431078 is about 237.7042556791.

The spelling of 13431078 in words is "thirteen million, four hundred thirty-one thousand, seventy-eight".