108215031 has 8 divisors (see below), whose sum is σ = 147806064. Its totient is φ = 70383680.

The previous prime is 108215021. The next prime is 108215033. The reversal of 108215031 is 130512801.

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

It is a cyclic number.

It is not a de Polignac number, because 108215031 - 2⁷ = 108214903 is a prime.

It is a super-2 number, since 2×108215031² = 23420985868661922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 108214989 and 108215007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108215033) 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, 439776 + ... + 440021.

It is an arithmetic number, because the mean of its divisors is an integer number (18475758).

Almost surely, 2^108215031 is an apocalyptic number.

108215031 is a deficient number, since it is larger than the sum of its proper divisors (39591033).

108215031 is an equidigital number, since it uses as much as digits as its factorization.

108215031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879841.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 108215031 is about 10402.6453847086. The cubic root of 108215031 is about 476.5361620223.

Adding to 108215031 its reverse (130512801), we get a palindrome (238727832).

The spelling of 108215031 in words is "one hundred eight million, two hundred fifteen thousand, thirty-one".