5231812342261 has 4 divisors (see below), whose sum is σ = 5232028744800. Its totient is φ = 5231595939724.

The previous prime is 5231812342243. The next prime is 5231812342271. The reversal of 5231812342261 is 1622432181325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5231812342261 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 (5231812342271) 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, 108165001 + ... + 108213358.

It is an arithmetic number, because the mean of its divisors is an integer number (1308007186200).

Almost surely, 2^{5231812342261} is an apocalyptic number.

It is an amenable number.

5231812342261 is a deficient number, since it is larger than the sum of its proper divisors (216402539).

5231812342261 is a wasteful number, since it uses less digits than its factorization.

5231812342261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216402538.

The product of its digits is 138240, while the sum is 40.

The spelling of 5231812342261 in words is "five trillion, two hundred thirty-one billion, eight hundred twelve million, three hundred forty-two thousand, two hundred sixty-one".