1151611123 has 6 divisors (see below), whose sum is σ = 1247011044. Its totient is φ = 1063025496.

The previous prime is 1151611117. The next prime is 1151611129. The reversal of 1151611123 is 3211161511.

It is an interprime number because it is at equal distance from previous prime (1151611117) and next prime (1151611129).

It is not a de Polignac number, because 1151611123 - 2⁵ = 1151611091 is a prime.

It is a super-3 number, since 3×1151611123³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1151611094 and 1151611103.

It is not an unprimeable number, because it can be changed into a prime (1151611129) 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 5 ways as a sum of consecutive naturals, for example, 3406965 + ... + 3407302.

It is an arithmetic number, because the mean of its divisors is an integer number (207835174).

Almost surely, 2^1151611123 is an apocalyptic number.

1151611123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1151611123 is a deficient number, since it is larger than the sum of its proper divisors (95399921).

1151611123 is an equidigital number, since it uses as much as digits as its factorization.

1151611123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814293 (or 6814280 counting only the distinct ones).

The product of its digits is 180, while the sum is 22.

The square root of 1151611123 is about 33935.3963141732. The cubic root of 1151611123 is about 1048.1785876894.

Adding to 1151611123 its reverse (3211161511), we get a palindrome (4362772634).

The spelling of 1151611123 in words is "one billion, one hundred fifty-one million, six hundred eleven thousand, one hundred twenty-three".