131405211205 has 8 divisors (see below), whose sum is σ = 157690773504. Its totient is φ = 105121155600.

The previous prime is 131405211187. The next prime is 131405211319. The reversal of 131405211205 is 502112504131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131405211205 - 2²¹ = 131403114053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131405211205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174981 + ... + 541690.

It is an arithmetic number, because the mean of its divisors is an integer number (19711346688).

Almost surely, 2^131405211205 is an apocalyptic number.

It is an amenable number.

131405211205 is a deficient number, since it is larger than the sum of its proper divisors (26285562299).

131405211205 is an equidigital number, since it uses as much as digits as its factorization.

131405211205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753347.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 131405211205 its reverse (502112504131), we get a palindrome (633517715336).

The spelling of 131405211205 in words is "one hundred thirty-one billion, four hundred five million, two hundred eleven thousand, two hundred five".