233121012131 has 8 divisors (see below), whose sum is σ = 266451588960. Its totient is φ = 199797329088.

The previous prime is 233121012077. The next prime is 233121012151. The reversal of 233121012131 is 131210121332.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 233121012131 - 2²⁶ = 233053903267 is a prime.

It is a super-2 number, since 2×233121012131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233121012151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1650776 + ... + 1786421.

It is an arithmetic number, because the mean of its divisors is an integer number (33306448620).

Almost surely, 2^233121012131 is an apocalyptic number.

233121012131 is a deficient number, since it is larger than the sum of its proper divisors (33330576829).

233121012131 is an equidigital number, since it uses as much as digits as its factorization.

233121012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446893.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 233121012131 its reverse (131210121332), we get a palindrome (364331133463).

It can be divided in two parts, 2 and 33121012131, that added together give a palindrome (33121012133).

The spelling of 233121012131 in words is "two hundred thirty-three billion, one hundred twenty-one million, twelve thousand, one hundred thirty-one".