1145321229 has 16 divisors (see below), whose sum is σ = 1741303872. Its totient is φ = 663353088.

The previous prime is 1145321209. The next prime is 1145321279. The reversal of 1145321229 is 9221235411.

It is not a de Polignac number, because 1145321229 - 2⁸ = 1145320973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1145321196 and 1145321205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145321209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863079 + ... + 864404.

It is an arithmetic number, because the mean of its divisors is an integer number (108831492).

Almost surely, 2^1145321229 is an apocalyptic number.

It is an amenable number.

1145321229 is a deficient number, since it is larger than the sum of its proper divisors (595982643).

1145321229 is a wasteful number, since it uses less digits than its factorization.

1145321229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727516.

The product of its digits is 4320, while the sum is 30.

The square root of 1145321229 is about 33842.5948916451. The cubic root of 1145321229 is about 1046.2667814754.

The spelling of 1145321229 in words is "one billion, one hundred forty-five million, three hundred twenty-one thousand, two hundred twenty-nine".