23103131212321 has 2 divisors, whose sum is σ = 23103131212322. Its totient is φ = 23103131212320.

The previous prime is 23103131212297. The next prime is 23103131212361. The reversal of 23103131212321 is 12321213130132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11951298414225 + 11151832798096 = 3457065^2 + 3339436^2 .

It is a cyclic number.

It is not a de Polignac number, because 23103131212321 - 2²⁷ = 23102996994593 is a prime.

It is not a weakly prime, because it can be changed into another prime (23103131212361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11551565606160 + 11551565606161.

It is an arithmetic number, because the mean of its divisors is an integer number (11551565606161).

Almost surely, 2^{23103131212321} is an apocalyptic number.

It is an amenable number.

23103131212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23103131212321 is an equidigital number, since it uses as much as digits as its factorization.

23103131212321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 23103131212321 its reverse (12321213130132), we get a palindrome (35424344342453).

The spelling of 23103131212321 in words is "twenty-three trillion, one hundred three billion, one hundred thirty-one million, two hundred twelve thousand, three hundred twenty-one".