123631037 has 2 divisors, whose sum is σ = 123631038. Its totient is φ = 123631036.

The previous prime is 123630959. The next prime is 123631051. The reversal of 123631037 is 730136321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106275481 + 17355556 = 10309^2 + 4166^2 .

It is a cyclic number.

It is not a de Polignac number, because 123631037 - 2⁸ = 123630781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123630997 and 123631015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123631637) 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 as a sum of consecutive naturals, namely, 61815518 + 61815519.

It is an arithmetic number, because the mean of its divisors is an integer number (61815519).

Almost surely, 2^123631037 is an apocalyptic number.

It is an amenable number.

123631037 is a deficient number, since it is larger than the sum of its proper divisors (1).

123631037 is an equidigital number, since it uses as much as digits as its factorization.

123631037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 123631037 is about 11118.9494557714. The cubic root of 123631037 is about 498.1680118367.

Adding to 123631037 its reverse (730136321), we get a palindrome (853767358).

The spelling of 123631037 in words is "one hundred twenty-three million, six hundred thirty-one thousand, thirty-seven".