123301631 has 2 divisors, whose sum is σ = 123301632. Its totient is φ = 123301630.

The previous prime is 123301589. The next prime is 123301669. The reversal of 123301631 is 136103321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123301631 - 2⁶ = 123301567 is a prime.

It is a super-2 number, since 2×123301631² = 30406584414520322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123301531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61650815 + 61650816.

It is an arithmetic number, because the mean of its divisors is an integer number (61650816).

Almost surely, 2^123301631 is an apocalyptic number.

123301631 is a deficient number, since it is larger than the sum of its proper divisors (1).

123301631 is an equidigital number, since it uses as much as digits as its factorization.

123301631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 123301631 is about 11104.1267554004. The cubic root of 123301631 is about 497.7251740294.

Adding to 123301631 its reverse (136103321), we get a palindrome (259404952).

The spelling of 123301631 in words is "one hundred twenty-three million, three hundred one thousand, six hundred thirty-one".