16379431 has 4 divisors (see below), whose sum is σ = 16760392. Its totient is φ = 15998472.

The previous prime is 16379401. The next prime is 16379443. The reversal of 16379431 is 13497361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13497361 = 109 ⋅123829.

It is a cyclic number.

It is not a de Polignac number, because 16379431 - 2²³ = 7990823 is a prime.

It is a super-2 number, since 2×16379431² = 536571519767522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16379401) 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, 190416 + ... + 190501.

It is an arithmetic number, because the mean of its divisors is an integer number (4190098).

Almost surely, 2^16379431 is an apocalyptic number.

16379431 is a deficient number, since it is larger than the sum of its proper divisors (380961).

16379431 is an equidigital number, since it uses as much as digits as its factorization.

16379431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380960.

The product of its digits is 13608, while the sum is 34.

The square root of 16379431 is about 4047.1509732156. The cubic root of 16379431 is about 253.9605566297.

The spelling of 16379431 in words is "sixteen million, three hundred seventy-nine thousand, four hundred thirty-one".