123151120613 has 4 divisors (see below), whose sum is σ = 129632758560. Its totient is φ = 116669482668.

The previous prime is 123151120579. The next prime is 123151120649. The reversal of 123151120613 is 316021151321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123151120613 - 2⁶ = 123151120549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123151120663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240818945 + ... + 3240818982.

It is an arithmetic number, because the mean of its divisors is an integer number (32408189640).

Almost surely, 2^123151120613 is an apocalyptic number.

It is an amenable number.

123151120613 is a deficient number, since it is larger than the sum of its proper divisors (6481637947).

123151120613 is an equidigital number, since it uses as much as digits as its factorization.

123151120613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481637946.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 123151120613 its reverse (316021151321), we get a palindrome (439172271934).

The spelling of 123151120613 in words is "one hundred twenty-three billion, one hundred fifty-one million, one hundred twenty thousand, six hundred thirteen".