108421431 has 8 divisors (see below), whose sum is σ = 144614640. Its totient is φ = 72254592.

The previous prime is 108421421. The next prime is 108421441. The reversal of 108421431 is 134124801.

It is an interprime number because it is at equal distance from previous prime (108421421) and next prime (108421441).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 108421431 - 2¹⁵ = 108388663 is a prime.

It is a super-2 number, since 2×108421431² = 23510413400175522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108421421) 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, 7021 + ... + 16313.

It is an arithmetic number, because the mean of its divisors is an integer number (18076830).

Almost surely, 2^108421431 is an apocalyptic number.

108421431 is a deficient number, since it is larger than the sum of its proper divisors (36193209).

108421431 is an equidigital number, since it uses as much as digits as its factorization.

108421431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13185.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 108421431 is about 10412.5612123051. The cubic root of 108421431 is about 476.8389375749.

The spelling of 108421431 in words is "one hundred eight million, four hundred twenty-one thousand, four hundred thirty-one".