123015356413 has 2 divisors, whose sum is σ = 123015356414. Its totient is φ = 123015356412.

The previous prime is 123015356383. The next prime is 123015356459. The reversal of 123015356413 is 314653510321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73570052644 + 49445303769 = 271238^2 + 222363^2 .

It is an emirp because it is prime and its reverse (314653510321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123015356413 - 2⁹ = 123015355901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123015356473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61507678206 + 61507678207.

It is an arithmetic number, because the mean of its divisors is an integer number (61507678207).

Almost surely, 2^123015356413 is an apocalyptic number.

It is an amenable number.

123015356413 is a deficient number, since it is larger than the sum of its proper divisors (1).

123015356413 is an equidigital number, since it uses as much as digits as its factorization.

123015356413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 123015356413 its reverse (314653510321), we get a palindrome (437668866734).

The spelling of 123015356413 in words is "one hundred twenty-three billion, fifteen million, three hundred fifty-six thousand, four hundred thirteen".