123631912408 has 32 divisors (see below), whose sum is σ = 235324954800. Its totient is φ = 60879025152.

The previous prime is 123631912301. The next prime is 123631912409. The reversal of 123631912408 is 804219136321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123631912409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471388 + ... + 2520916.

Almost surely, 2^123631912408 is an apocalyptic number.

It is an amenable number.

123631912408 is a deficient number, since it is larger than the sum of its proper divisors (111693042392).

123631912408 is a wasteful number, since it uses less digits than its factorization.

123631912408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54259 (or 54255 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 123631912408 in words is "one hundred twenty-three billion, six hundred thirty-one million, nine hundred twelve thousand, four hundred eight".