1099731234 has 32 divisors (see below), whose sum is σ = 2537174016. Its totient is φ = 311271120.

The previous prime is 1099731211. The next prime is 1099731247. The reversal of 1099731234 is 4321379901.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1099731192 and 1099731201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117862 + ... + 126849.

It is an arithmetic number, because the mean of its divisors is an integer number (79286688).

Almost surely, 2^1099731234 is an apocalyptic number.

1099731234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1099731234 is an abundant number, since it is smaller than the sum of its proper divisors (1437442782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099731234 is a wasteful number, since it uses less digits than its factorization.

1099731234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244830.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 1099731234 is about 33162.1958561251. The cubic root of 1099731234 is about 1032.1960353362.

The spelling of 1099731234 in words is "one billion, ninety-nine million, seven hundred thirty-one thousand, two hundred thirty-four".