123351520037 has 2 divisors, whose sum is σ = 123351520038. Its totient is φ = 123351520036.

The previous prime is 123351520007. The next prime is 123351520157. The reversal of 123351520037 is 730025153321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91055476516 + 32296043521 = 301754^2 + 179711^2 .

It is a cyclic number.

It is not a de Polignac number, because 123351520037 - 2¹² = 123351515941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123351519985 and 123351520012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123351520007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61675760018 + 61675760019.

It is an arithmetic number, because the mean of its divisors is an integer number (61675760019).

Almost surely, 2^123351520037 is an apocalyptic number.

It is an amenable number.

123351520037 is a deficient number, since it is larger than the sum of its proper divisors (1).

123351520037 is an equidigital number, since it uses as much as digits as its factorization.

123351520037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 32.

Adding to 123351520037 its reverse (730025153321), we get a palindrome (853376673358).

The spelling of 123351520037 in words is "one hundred twenty-three billion, three hundred fifty-one million, five hundred twenty thousand, thirty-seven".