1051123321 has 8 divisors (see below), whose sum is σ = 1065561480. Its totient is φ = 1036783488.

The previous prime is 1051123289. The next prime is 1051123327. The reversal of 1051123321 is 1233211501.

It can be written as a sum of positive squares in 4 ways, for example, as 36000000 + 1015123321 = 6000^2 + 31861^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1051123321 - 2⁵ = 1051123289 is a prime.

It is a super-2 number, since 2×1051123321² = 2209720471900138082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051123327) 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, 2926 + ... + 45943.

It is an arithmetic number, because the mean of its divisors is an integer number (133195185).

Almost surely, 2^1051123321 is an apocalyptic number.

It is an amenable number.

1051123321 is a deficient number, since it is larger than the sum of its proper divisors (14438159).

1051123321 is a wasteful number, since it uses less digits than its factorization.

1051123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49163.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1051123321 is about 32421.0320779583. The cubic root of 1051123321 is about 1016.7586845794.

Adding to 1051123321 its reverse (1233211501), we get a palindrome (2284334822).

The spelling of 1051123321 in words is "one billion, fifty-one million, one hundred twenty-three thousand, three hundred twenty-one".