233031011031 has 36 divisors (see below), whose sum is σ = 421675173192. Its totient is φ = 122917453344.

The previous prime is 233031011009. The next prime is 233031011041. The reversal of 233031011031 is 130110130332.

It is a happy number.

It is not a de Polignac number, because 233031011031 - 2¹¹ = 233031008983 is a prime.

It is a super-2 number, since 2×233031011031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 233031010995 and 233031011013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233031011041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20317921 + ... + 20329386.

Almost surely, 2^233031011031 is an apocalyptic number.

233031011031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

233031011031 is a deficient number, since it is larger than the sum of its proper divisors (188644162161).

233031011031 is a wasteful number, since it uses less digits than its factorization.

233031011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40647340 (or 40647330 counting only the distinct ones).

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

Adding to 233031011031 its reverse (130110130332), we get a palindrome (363141141363).

The spelling of 233031011031 in words is "two hundred thirty-three billion, thirty-one million, eleven thousand, thirty-one".