1100431311 has 16 divisors (see below), whose sum is σ = 1686117888. Its totient is φ = 625341600.

The previous prime is 1100431289. The next prime is 1100431313. The reversal of 1100431311 is 1131340011.

It is not a de Polignac number, because 1100431311 - 2⁵ = 1100431279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100431313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140955 + ... + 148556.

It is an arithmetic number, because the mean of its divisors is an integer number (105382368).

Almost surely, 2^1100431311 is an apocalyptic number.

1100431311 is a deficient number, since it is larger than the sum of its proper divisors (585686577).

1100431311 is a wasteful number, since it uses less digits than its factorization.

1100431311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289702.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1100431311 is about 33172.7495242707. The cubic root of 1100431311 is about 1032.4150171501.

Adding to 1100431311 its reverse (1131340011), we get a palindrome (2231771322).

The spelling of 1100431311 in words is "one billion, one hundred million, four hundred thirty-one thousand, three hundred eleven".