123631047 has 12 divisors (see below), whose sum is σ = 178676160. Its totient is φ = 82375488.

The previous prime is 123631037. The next prime is 123631051. The reversal of 123631047 is 740136321.

123631047 is a `hidden beast` number, since 1 + 23 + 631 + 0 + 4 + 7 = 666.

It is not a de Polignac number, because 123631047 - 2¹⁴ = 123614663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123631047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123631037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25578 + ... + 30024.

It is an arithmetic number, because the mean of its divisors is an integer number (14889680).

Almost surely, 2^123631047 is an apocalyptic number.

123631047 is a deficient number, since it is larger than the sum of its proper divisors (55045113).

123631047 is a wasteful number, since it uses less digits than its factorization.

123631047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542 (or 7539 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 123631047 is about 11118.9499054542. The cubic root of 123631047 is about 498.1680252683.

Adding to 123631047 its reverse (740136321), we get a palindrome (863767368).

The spelling of 123631047 in words is "one hundred twenty-three million, six hundred thirty-one thousand, forty-seven".