1099231 has 8 divisors (see below), whose sum is σ = 1262624. Its totient is φ = 937440.

The previous prime is 1099223. The next prime is 1099247. The reversal of 1099231 is 1329901.

1099231 = T₃₁₃ + T₃₁₄ + ... + T₃₃₃.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1099231 - 2³ = 1099223 is a prime.

It is a super-2 number, since 2×1099231² = 2416617582722, 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 = 1099196 and 1099205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099261) 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, 2401 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (157828).

2^1099231 is an apocalyptic number.

1099231 is a deficient number, since it is larger than the sum of its proper divisors (163393).

1099231 is an equidigital number, since it uses as much as digits as its factorization.

1099231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1099231 is about 1048.4421777094. The cubic root of 1099231 is about 103.2039506830.

The spelling of 1099231 in words is "one million, ninety-nine thousand, two hundred thirty-one".