2331520561939 has 4 divisors (see below), whose sum is σ = 2331535274424. Its totient is φ = 2331505849456.

The previous prime is 2331520561927. The next prime is 2331520561957. The reversal of 2331520561939 is 9391650251332.

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 2331520561939 - 2⁵ = 2331520561907 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2331520561892 and 2331520561901.

It is not an unprimeable number, because it can be changed into a prime (2331520561639) 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, 7115917 + ... + 7436350.

It is an arithmetic number, because the mean of its divisors is an integer number (582883818606).

Almost surely, 2^{2331520561939} is an apocalyptic number.

2331520561939 is a deficient number, since it is larger than the sum of its proper divisors (14712485).

2331520561939 is a wasteful number, since it uses less digits than its factorization.

2331520561939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14712484.

The product of its (nonzero) digits is 1312200, while the sum is 49.

The spelling of 2331520561939 in words is "two trillion, three hundred thirty-one billion, five hundred twenty million, five hundred sixty-one thousand, nine hundred thirty-nine".