1153231451 has 4 divisors (see below), whose sum is σ = 1159269504. Its totient is φ = 1147193400.

The previous prime is 1153231447. The next prime is 1153231463. The reversal of 1153231451 is 1541323511.

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 1153231451 - 2² = 1153231447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153231451.

It is not an unprimeable number, because it can be changed into a prime (1153231421) 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, 3018740 + ... + 3019121.

It is an arithmetic number, because the mean of its divisors is an integer number (289817376).

Almost surely, 2^1153231451 is an apocalyptic number.

1153231451 is a deficient number, since it is larger than the sum of its proper divisors (6038053).

1153231451 is an equidigital number, since it uses as much as digits as its factorization.

1153231451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6038052.

The product of its digits is 1800, while the sum is 26.

The square root of 1153231451 is about 33959.2616380274. The cubic root of 1153231451 is about 1048.6699564484.

Adding to 1153231451 its reverse (1541323511), we get a palindrome (2694554962).

The spelling of 1153231451 in words is "one billion, one hundred fifty-three million, two hundred thirty-one thousand, four hundred fifty-one".