23121312130 has 32 divisors (see below), whose sum is σ = 47574800640. Its totient is φ = 7925480640.

The previous prime is 23121312127. The next prime is 23121312131. The reversal of 23121312130 is 3121312132.

It is a super-2 number, since 2×23121312130² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23121312098 and 23121312107.

It is not an unprimeable number, because it can be changed into a prime (23121312131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287731 + ... + 359209.

It is an arithmetic number, because the mean of its divisors is an integer number (1486712520).

Almost surely, 2^23121312130 is an apocalyptic number.

23121312130 is an abundant number, since it is smaller than the sum of its proper divisors (24453488510).

23121312130 is a wasteful number, since it uses less digits than its factorization.

23121312130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76114.

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

Adding to 23121312130 its reverse (3121312132), we get a palindrome (26242624262).

The spelling of 23121312130 in words is "twenty-three billion, one hundred twenty-one million, three hundred twelve thousand, one hundred thirty".