13972311 has 16 divisors (see below), whose sum is σ = 20797920. Its totient is φ = 9270720.

The previous prime is 13972307. The next prime is 13972313. The reversal of 13972311 is 11327931.

It is not a de Polignac number, because 13972311 - 2² = 13972307 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 (13972313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5181 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (1299870).

Almost surely, 2^13972311 is an apocalyptic number.

13972311 is a deficient number, since it is larger than the sum of its proper divisors (6825609).

13972311 is a wasteful number, since it uses less digits than its factorization.

13972311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463 (or 2457 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 13972311 is about 3737.9554571985. The cubic root of 13972311 is about 240.8552300532.

The spelling of 13972311 in words is "thirteen million, nine hundred seventy-two thousand, three hundred eleven".