23103131121 has 40 divisors (see below), whose sum is σ = 41762540160. Its totient is φ = 12425208192.

The previous prime is 23103131119. The next prime is 23103131131. The reversal of 23103131121 is 12113130132.

23103131121 is a `hidden beast` number, since 231 + 0 + 313 + 1 + 121 = 666.

It is not a de Polignac number, because 23103131121 - 2¹ = 23103131119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23103131094 and 23103131103.

It is not an unprimeable number, because it can be changed into a prime (23103131131) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1188781 + ... + 1208058.

It is an arithmetic number, because the mean of its divisors is an integer number (1044063504).

Almost surely, 2^23103131121 is an apocalyptic number.

23103131121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23103131121 is a deficient number, since it is larger than the sum of its proper divisors (18659409039).

23103131121 is a wasteful number, since it uses less digits than its factorization.

23103131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396875 (or 2396866 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 23103131121 its reverse (12113130132), we get a palindrome (35216261253).

The spelling of 23103131121 in words is "twenty-three billion, one hundred three million, one hundred thirty-one thousand, one hundred twenty-one".