109108631 has 4 divisors (see below), whose sum is σ = 109142592. Its totient is φ = 109074672.

The previous prime is 109108613. The next prime is 109108633. The reversal of 109108631 is 136801901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136801901 = 1973 ⋅69337.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109108631 is a prime.

It is a super-2 number, since 2×109108631² = 23809386717388322, 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 = 109108594 and 109108603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109108633) 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, 11591 + ... + 18776.

It is an arithmetic number, because the mean of its divisors is an integer number (27285648).

Almost surely, 2^109108631 is an apocalyptic number.

109108631 is a deficient number, since it is larger than the sum of its proper divisors (33961).

109108631 is an equidigital number, since it uses as much as digits as its factorization.

109108631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33960.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 109108631 is about 10445.5076946982. The cubic root of 109108631 is about 477.8442549149.

The spelling of 109108631 in words is "one hundred nine million, one hundred eight thousand, six hundred thirty-one".