123072004631 has 2 divisors, whose sum is σ = 123072004632. Its totient is φ = 123072004630.

The previous prime is 123072004621. The next prime is 123072004661. The reversal of 123072004631 is 136400270321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123072004631 is a prime.

It is a super-2 number, since 2×123072004631² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123072004594 and 123072004603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123072004621) 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, 61536002315 + 61536002316.

It is an arithmetic number, because the mean of its divisors is an integer number (61536002316).

Almost surely, 2^123072004631 is an apocalyptic number.

123072004631 is a deficient number, since it is larger than the sum of its proper divisors (1).

123072004631 is an equidigital number, since it uses as much as digits as its factorization.

123072004631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 123072004631 its reverse (136400270321), we get a palindrome (259472274952).

The spelling of 123072004631 in words is "one hundred twenty-three billion, seventy-two million, four thousand, six hundred thirty-one".