1151203123 has 8 divisors (see below), whose sum is σ = 1317496320. Its totient is φ = 985368840.

The previous prime is 1151203117. The next prime is 1151203133. The reversal of 1151203123 is 3213021511.

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 1151203123 - 2¹³ = 1151194931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1151203123.

It is not an unprimeable number, because it can be changed into a prime (1151203133) 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, 109333 + ... + 119398.

It is an arithmetic number, because the mean of its divisors is an integer number (164687040).

Almost surely, 2^1151203123 is an apocalyptic number.

1151203123 is a deficient number, since it is larger than the sum of its proper divisors (166293197).

1151203123 is an equidigital number, since it uses as much as digits as its factorization.

1151203123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229457.

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

The square root of 1151203123 is about 33929.3843592836. The cubic root of 1151203123 is about 1048.0547879769.

Adding to 1151203123 its reverse (3213021511), we get a palindrome (4364224634).

The spelling of 1151203123 in words is "one billion, one hundred fifty-one million, two hundred three thousand, one hundred twenty-three".