631125423 has 24 divisors (see below), whose sum is σ = 935319840. Its totient is φ = 409847040.

The previous prime is 631125389. The next prime is 631125449. The reversal of 631125423 is 324521136.

631125423 is a `hidden beast` number, since 6 + 3 + 112 + 542 + 3 = 666.

It is not a de Polignac number, because 631125423 - 2⁸ = 631125167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631125623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391443 + ... + 393051.

It is an arithmetic number, because the mean of its divisors is an integer number (38971660).

Almost surely, 2^631125423 is an apocalyptic number.

631125423 is a deficient number, since it is larger than the sum of its proper divisors (304194417).

631125423 is a wasteful number, since it uses less digits than its factorization.

631125423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719 (or 2716 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 631125423 is about 25122.2097555131. The cubic root of 631125423 is about 857.7720513660.

Adding to 631125423 its reverse (324521136), we get a palindrome (955646559).

The spelling of 631125423 in words is "six hundred thirty-one million, one hundred twenty-five thousand, four hundred twenty-three".