1090431227 has 4 divisors (see below), whose sum is σ = 1090601640. Its totient is φ = 1090260816.

The previous prime is 1090431217. The next prime is 1090431239. The reversal of 1090431227 is 7221340901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7221340901 = 34897 ⋅206933.

It is a cyclic number.

It is not a de Polignac number, because 1090431227 - 2⁶ = 1090431163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1090431227.

It is not an unprimeable number, because it can be changed into a prime (1090431217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75218 + ... + 88535.

It is an arithmetic number, because the mean of its divisors is an integer number (272650410).

Almost surely, 2^1090431227 is an apocalyptic number.

1090431227 is a deficient number, since it is larger than the sum of its proper divisors (170413).

1090431227 is an equidigital number, since it uses as much as digits as its factorization.

1090431227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170412.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1090431227 is about 33021.6781372480. The cubic root of 1090431227 is about 1029.2781655032.

The spelling of 1090431227 in words is "one billion, ninety million, four hundred thirty-one thousand, two hundred twenty-seven".