123383931583 has 16 divisors (see below), whose sum is σ = 137339736480. Its totient is φ = 109898956800.

The previous prime is 123383931581. The next prime is 123383931653. The reversal of 123383931583 is 385139383321.

It is not a de Polignac number, because 123383931583 - 2¹ = 123383931581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123383931581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185298 + ... + 530191.

It is an arithmetic number, because the mean of its divisors is an integer number (8583733530).

Almost surely, 2^123383931583 is an apocalyptic number.

123383931583 is a deficient number, since it is larger than the sum of its proper divisors (13955804897).

123383931583 is a wasteful number, since it uses less digits than its factorization.

123383931583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715818.

The product of its digits is 1399680, while the sum is 49.

The spelling of 123383931583 in words is "one hundred twenty-three billion, three hundred eighty-three million, nine hundred thirty-one thousand, five hundred eighty-three".