109431015 has 36 divisors (see below), whose sum is σ = 182448504. Its totient is φ = 56007936.

The previous prime is 109430999. The next prime is 109431029. The reversal of 109431015 is 510134901.

It is not a de Polignac number, because 109431015 - 2⁴ = 109430999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1499019 + ... + 1499091.

It is an arithmetic number, because the mean of its divisors is an integer number (5068014).

Almost surely, 2^109431015 is an apocalyptic number.

109431015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109431015 is a deficient number, since it is larger than the sum of its proper divisors (73017489).

109431015 is an frugal number, since it uses more digits than its factorization.

109431015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 109431015 is about 10460.9280181062. The cubic root of 109431015 is about 478.3144220193.

Multiplying 109431015 by its product of nonzero digits (540), we get a square (59092748100 = 243090²).

Adding to 109431015 its reverse (510134901), we get a palindrome (619565916).

The spelling of 109431015 in words is "one hundred nine million, four hundred thirty-one thousand, fifteen".