1109903431 has 16 divisors (see below), whose sum is σ = 1366924608. Its totient is φ = 877593600.

The previous prime is 1109903413. The next prime is 1109903477. The reversal of 1109903431 is 1343099011.

It is not a de Polignac number, because 1109903431 - 2¹³ = 1109895239 is a prime.

It is a super-2 number, since 2×1109903431² = 2463771252291143522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1109903393 and 1109903402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109907431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186441 + ... + 192301.

It is an arithmetic number, because the mean of its divisors is an integer number (85432788).

Almost surely, 2^1109903431 is an apocalyptic number.

1109903431 is a deficient number, since it is larger than the sum of its proper divisors (257021177).

1109903431 is a wasteful number, since it uses less digits than its factorization.

1109903431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1109903431 is about 33315.2132065818. The cubic root of 1109903431 is about 1035.3687783232.

The spelling of 1109903431 in words is "one billion, one hundred nine million, nine hundred three thousand, four hundred thirty-one".