109018012931 has 4 divisors (see below), whose sum is σ = 109043470872. Its totient is φ = 108992554992.

The previous prime is 109018012927. The next prime is 109018012933. The reversal of 109018012931 is 139210810901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139210810901 = 61 ⋅2282144441.

It is a cyclic number.

It is not a de Polignac number, because 109018012931 - 2² = 109018012927 is a prime.

It is a super-2 number, since 2×109018012931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109018012891 and 109018012900.

It is not an unprimeable number, because it can be changed into a prime (109018012933) 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, 12722546 + ... + 12731111.

It is an arithmetic number, because the mean of its divisors is an integer number (27260867718).

Almost surely, 2^109018012931 is an apocalyptic number.

109018012931 is a deficient number, since it is larger than the sum of its proper divisors (25457941).

109018012931 is an equidigital number, since it uses as much as digits as its factorization.

109018012931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25457940.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 109018012931 in words is "one hundred nine billion, eighteen million, twelve thousand, nine hundred thirty-one".