109315631 has 4 divisors (see below), whose sum is σ = 110176512. Its totient is φ = 108454752.

The previous prime is 109315621. The next prime is 109315637. The reversal of 109315631 is 136513901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109315631 - 2²² = 105121327 is a prime.

It is a super-2 number, since 2×109315631² = 23899814361856322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109315594 and 109315603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109315637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430250 + ... + 430503.

It is an arithmetic number, because the mean of its divisors is an integer number (27544128).

Almost surely, 2^109315631 is an apocalyptic number.

109315631 is a deficient number, since it is larger than the sum of its proper divisors (860881).

109315631 is an equidigital number, since it uses as much as digits as its factorization.

109315631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860880.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 109315631 is about 10455.4115653091. The cubic root of 109315631 is about 478.1462514142.

The spelling of 109315631 in words is "one hundred nine million, three hundred fifteen thousand, six hundred thirty-one".