23131121030002 has 4 divisors (see below), whose sum is σ = 34696681545006. Its totient is φ = 11565560515000.

The previous prime is 23131121029999. The next prime is 23131121030011. The reversal of 23131121030002 is 20003012113132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21139130348361 + 1991990681641 = 4597731^2 + 1411379^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5782780257499 + ... + 5782780257502.

Almost surely, 2^{23131121030002} is an apocalyptic number.

23131121030002 is a deficient number, since it is larger than the sum of its proper divisors (11565560515004).

23131121030002 is a wasteful number, since it uses less digits than its factorization.

23131121030002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11565560515003.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23131121030002 its reverse (20003012113132), we get a palindrome (43134133143134).

The spelling of 23131121030002 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred twenty-one million, thirty thousand, two".