1232311011 has 32 divisors (see below), whose sum is σ = 1791915840. Its totient is φ = 750145536.

The previous prime is 1232311009. The next prime is 1232311013. The reversal of 1232311011 is 1101132321.

It is a happy number.

1232311011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1232311009) and next prime (1232311013).

It is not a de Polignac number, because 1232311011 - 2¹ = 1232311009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1232311013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 861645 + ... + 863073.

It is an arithmetic number, because the mean of its divisors is an integer number (55997370).

Almost surely, 2^1232311011 is an apocalyptic number.

1232311011 is a deficient number, since it is larger than the sum of its proper divisors (559604829).

1232311011 is a wasteful number, since it uses less digits than its factorization.

1232311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1232311011 is about 35104.2876441041. The cubic root of 1232311011 is about 1072.1118830815. Note that the first 3 decimals are identical.

Adding to 1232311011 its reverse (1101132321), we get a palindrome (2333443332).

The spelling of 1232311011 in words is "one billion, two hundred thirty-two million, three hundred eleven thousand, eleven".