123432552631 has 4 divisors (see below), whose sum is σ = 123434024112. Its totient is φ = 123431081152.

The previous prime is 123432552587. The next prime is 123432552667. The reversal of 123432552631 is 136255234321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123432552631 - 2¹¹ = 123432550583 is a prime.

It is a super-4 number, since 4×123432552631⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123432952631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601786 + ... + 780391.

It is an arithmetic number, because the mean of its divisors is an integer number (30858506028).

Almost surely, 2^123432552631 is an apocalyptic number.

123432552631 is a deficient number, since it is larger than the sum of its proper divisors (1471481).

123432552631 is an equidigital number, since it uses as much as digits as its factorization.

123432552631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471480.

The product of its digits is 129600, while the sum is 37.

Adding to 123432552631 its reverse (136255234321), we get a palindrome (259687786952).

The spelling of 123432552631 in words is "one hundred twenty-three billion, four hundred thirty-two million, five hundred fifty-two thousand, six hundred thirty-one".