1231120033 has 16 divisors (see below), whose sum is σ = 1447689600. Its totient is φ = 1032151680.

The previous prime is 1231120031. The next prime is 1231120061. The reversal of 1231120033 is 3300211321.

It is a cyclic number.

It is not a de Polignac number, because 1231120033 - 2¹ = 1231120031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231119989 and 1231120016.

It is not an unprimeable number, because it can be changed into a prime (1231120031) 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 15 ways as a sum of consecutive naturals, for example, 180988 + ... + 187666.

It is an arithmetic number, because the mean of its divisors is an integer number (90480600).

Almost surely, 2^1231120033 is an apocalyptic number.

1231120033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1231120033 is a deficient number, since it is larger than the sum of its proper divisors (216569567).

1231120033 is a wasteful number, since it uses less digits than its factorization.

1231120033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7992.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1231120033 is about 35087.3201171021. The cubic root of 1231120033 is about 1071.7663877153.

Adding to 1231120033 its reverse (3300211321), we get a palindrome (4531331354).

The spelling of 1231120033 in words is "one billion, two hundred thirty-one million, one hundred twenty thousand, thirty-three".