13918311 has 48 divisors (see below), whose sum is σ = 23482368. Its totient is φ = 8164800.

The previous prime is 13918301. The next prime is 13918337. The reversal of 13918311 is 11381931.

It is a happy number.

It is not a de Polignac number, because 13918311 - 2¹³ = 13910119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13918301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109530 + ... + 109656.

It is an arithmetic number, because the mean of its divisors is an integer number (489216).

Almost surely, 2^13918311 is an apocalyptic number.

13918311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13918311 is a deficient number, since it is larger than the sum of its proper divisors (9564057).

13918311 is a wasteful number, since it uses less digits than its factorization.

13918311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 182 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 13918311 is about 3730.7252646101. The cubic root of 13918311 is about 240.5445447780.

The spelling of 13918311 in words is "thirteen million, nine hundred eighteen thousand, three hundred eleven".