123631509152 has 48 divisors (see below), whose sum is σ = 256543527240. Its totient is φ = 58558036992.

The previous prime is 123631509151. The next prime is 123631509163. The reversal of 123631509152 is 251905136321.

It can be written as a sum of positive squares in 4 ways, for example, as 106143033616 + 17488475536 = 325796^2 + 132244^2 .

It is not an unprimeable number, because it can be changed into a prime (123631509151) 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, 1207643 + ... + 1306010.

Almost surely, 2^123631509152 is an apocalyptic number.

It is an amenable number.

123631509152 is an abundant number, since it is smaller than the sum of its proper divisors (132912018088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123631509152 is a wasteful number, since it uses less digits than its factorization.

123631509152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513745 (or 2513737 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The spelling of 123631509152 in words is "one hundred twenty-three billion, six hundred thirty-one million, five hundred nine thousand, one hundred fifty-two".