13922531 has 4 divisors (see below), whose sum is σ = 15911472. Its totient is φ = 11933592.

The previous prime is 13922527. The next prime is 13922539. The reversal of 13922531 is 13522931.

13922531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13522931 = 193 ⋅70067.

It is a cyclic number.

It is not a de Polignac number, because 13922531 - 2² = 13922527 is a prime.

It is a super-2 number, since 2×13922531² = 387673738891922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13922531.

It is not an unprimeable number, because it can be changed into a prime (13922539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994460 + ... + 994473.

It is an arithmetic number, because the mean of its divisors is an integer number (3977868).

Almost surely, 2^13922531 is an apocalyptic number.

13922531 is a deficient number, since it is larger than the sum of its proper divisors (1988941).

13922531 is an equidigital number, since it uses as much as digits as its factorization.

13922531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988940.

The product of its digits is 1620, while the sum is 26.

The square root of 13922531 is about 3731.2907954219. The cubic root of 13922531 is about 240.5688531730.

The spelling of 13922531 in words is "thirteen million, nine hundred twenty-two thousand, five hundred thirty-one".