1020231229 has 4 divisors (see below), whose sum is σ = 1047805084. Its totient is φ = 992657376.

The previous prime is 1020231221. The next prime is 1020231257. The reversal of 1020231229 is 9221320201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9221320201 = 43 ⋅214449307.

It can be written as a sum of positive squares in 2 ways, for example, as 702144004 + 318087225 = 26498^2 + 17835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020231229 - 2³ = 1020231221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020231221) 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, 13786872 + ... + 13786945.

It is an arithmetic number, because the mean of its divisors is an integer number (261951271).

Almost surely, 2^1020231229 is an apocalyptic number.

It is an amenable number.

1020231229 is a deficient number, since it is larger than the sum of its proper divisors (27573855).

1020231229 is an equidigital number, since it uses as much as digits as its factorization.

1020231229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27573854.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1020231229 is about 31941.0586706202. The cubic root of 1020231229 is about 1006.6987692909.

The spelling of 1020231229 in words is "one billion, twenty million, two hundred thirty-one thousand, two hundred twenty-nine".