1123451300 has 36 divisors (see below), whose sum is σ = 2521960980. Its totient is φ = 433883520.

The previous prime is 1123451297. The next prime is 1123451309. The reversal of 1123451300 is 31543211.

It can be written as a sum of positive squares in 6 ways, for example, as 122235136 + 1001216164 = 11056^2 + 31642^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1123451309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190799 + ... + 196598.

Almost surely, 2^1123451300 is an apocalyptic number.

1123451300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123451300 is an abundant number, since it is smaller than the sum of its proper divisors (1398509680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123451300 is a wasteful number, since it uses less digits than its factorization.

1123451300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387440 (or 387433 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1123451300 is about 33517.9250551104. The cubic root of 1123451300 is about 1039.5644440923.

Adding to 1123451300 its reverse (31543211), we get a palindrome (1154994511).

The spelling of 1123451300 in words is "one billion, one hundred twenty-three million, four hundred fifty-one thousand, three hundred".