23143402613 has 2 divisors, whose sum is σ = 23143402614. Its totient is φ = 23143402612.

The previous prime is 23143402589. The next prime is 23143402661. The reversal of 23143402613 is 31620434132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19271825329 + 3871577284 = 138823^2 + 62222^2 .

It is a cyclic number.

It is not a de Polignac number, because 23143402613 - 2⁶ = 23143402549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23143402213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571701306 + 11571701307.

It is an arithmetic number, because the mean of its divisors is an integer number (11571701307).

Almost surely, 2^23143402613 is an apocalyptic number.

It is an amenable number.

23143402613 is a deficient number, since it is larger than the sum of its proper divisors (1).

23143402613 is an equidigital number, since it uses as much as digits as its factorization.

23143402613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 23143402613 its reverse (31620434132), we get a palindrome (54763836745).

The spelling of 23143402613 in words is "twenty-three billion, one hundred forty-three million, four hundred two thousand, six hundred thirteen".