23131121130242 has 8 divisors (see below), whose sum is σ = 34756814594316. Its totient is φ = 11545516265472.

The previous prime is 23131121130239. The next prime is 23131121130259. The reversal of 23131121130242 is 24203112113132.

It can be written as a sum of positive squares in 2 ways, for example, as 21335706045481 + 1795415084761 = 4619059^2 + 1339931^2 .

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

It is a super-3 number, since 3×23131121130242³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10022148383 + ... + 10022150690.

Almost surely, 2^{23131121130242} is an apocalyptic number.

23131121130242 is a deficient number, since it is larger than the sum of its proper divisors (11625693464074).

23131121130242 is a wasteful number, since it uses less digits than its factorization.

23131121130242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20044299652.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 23131121130242 its reverse (24203112113132), we get a palindrome (47334233243374).

The spelling of 23131121130242 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred thirty thousand, two hundred forty-two".