1123364251 has 4 divisors (see below), whose sum is σ = 1123492104. Its totient is φ = 1123236400.

The previous prime is 1123364239. The next prime is 1123364287. The reversal of 1123364251 is 1524633211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123364251 - 2¹⁵ = 1123331483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123361251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49690 + ... + 68671.

It is an arithmetic number, because the mean of its divisors is an integer number (280873026).

Almost surely, 2^1123364251 is an apocalyptic number.

1123364251 is a deficient number, since it is larger than the sum of its proper divisors (127853).

1123364251 is an equidigital number, since it uses as much as digits as its factorization.

1123364251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127852.

The product of its digits is 4320, while the sum is 28.

The square root of 1123364251 is about 33516.6264859696. The cubic root of 1123364251 is about 1039.5375936827.

Adding to 1123364251 its reverse (1524633211), we get a palindrome (2647997462).

The spelling of 1123364251 in words is "one billion, one hundred twenty-three million, three hundred sixty-four thousand, two hundred fifty-one".