1109212031 has 8 divisors (see below), whose sum is σ = 1119035904. Its totient is φ = 1099405440.

The previous prime is 1109212021. The next prime is 1109212033. The reversal of 1109212031 is 1302129011.

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 1109212031 - 2⁶ = 1109211967 is a prime.

It is a super-2 number, since 2×1109212031² = 2460702659430289922, 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 = 1109211994 and 1109212012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109212033) 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, 147851 + ... + 155171.

It is an arithmetic number, because the mean of its divisors is an integer number (139879488).

Almost surely, 2^1109212031 is an apocalyptic number.

1109212031 is a deficient number, since it is larger than the sum of its proper divisors (9823873).

1109212031 is a wasteful number, since it uses less digits than its factorization.

1109212031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1109212031 is about 33304.8349492983. The cubic root of 1109212031 is about 1035.1537437989.

The spelling of 1109212031 in words is "one billion, one hundred nine million, two hundred twelve thousand, thirty-one".