13831280 has 40 divisors (see below), whose sum is σ = 33560352. Its totient is φ = 5291264.

The previous prime is 13831277. The next prime is 13831283. The reversal of 13831280 is 8213831.

It is an interprime number because it is at equal distance from previous prime (13831277) and next prime (13831283).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13831283) 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, 1919 + ... + 5598.

Almost surely, 2^13831280 is an apocalyptic number.

13831280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13831280 is an abundant number, since it is smaller than the sum of its proper divisors (19729072).

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

13831280 is a wasteful number, since it uses less digits than its factorization.

13831280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7553 (or 7547 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 13831280 is about 3719.0428876258. The cubic root of 13831280 is about 240.0421222364.

The spelling of 13831280 in words is "thirteen million, eight hundred thirty-one thousand, two hundred eighty".