131102255443421 has 8 divisors (see below), whose sum is σ = 131560029531000. Its totient is φ = 130644950630400.

The previous prime is 131102255443387. The next prime is 131102255443433. The reversal of 131102255443421 is 124344552201131.

It can be written as a sum of positive squares in 4 ways, for example, as 71312029176025 + 59790226267396 = 8444645^2 + 7732414^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 131102255443421 - 2¹⁸ = 131102255181277 is a prime.

It is a super-2 number, since 2×131102255443421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131102255443921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116758916 + ... + 117876413.

It is an arithmetic number, because the mean of its divisors is an integer number (16445003691375).

Almost surely, 2^{131102255443421} is an apocalyptic number.

It is an amenable number.

131102255443421 is a deficient number, since it is larger than the sum of its proper divisors (457774087579).

131102255443421 is a wasteful number, since it uses less digits than its factorization.

131102255443421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234637279.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 131102255443421 in words is "one hundred thirty-one trillion, one hundred two billion, two hundred fifty-five million, four hundred forty-three thousand, four hundred twenty-one".