1230133311 has 144 divisors (see below), whose sum is σ = 2258710272. Its totient is φ = 664899840.

The previous prime is 1230133309. The next prime is 1230133313. The reversal of 1230133311 is 1133310321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1230133309) and next prime (1230133313).

It is not a de Polignac number, because 1230133311 - 2¹ = 1230133309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230133313) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11496520 + ... + 11496626.

It is an arithmetic number, because the mean of its divisors is an integer number (15685488).

Almost surely, 2^1230133311 is an apocalyptic number.

1230133311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1230133311 is a deficient number, since it is larger than the sum of its proper divisors (1028576961).

1230133311 is a wasteful number, since it uses less digits than its factorization.

1230133311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1230133311 is about 35073.2563501024. The cubic root of 1230133311 is about 1071.4799769393.

Adding to 1230133311 its reverse (1133310321), we get a palindrome (2363443632).

The spelling of 1230133311 in words is "one billion, two hundred thirty million, one hundred thirty-three thousand, three hundred eleven".