131001243553 has 4 divisors (see below), whose sum is σ = 131222156868. Its totient is φ = 130780330240.

The previous prime is 131001243533. The next prime is 131001243563. The reversal of 131001243553 is 355342100131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110531646369 + 20469597184 = 332463^2 + 143072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131001243553 is a prime.

It is a super-2 number, since 2×131001243553² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131001243533) 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, 110455768 + ... + 110456953.

It is an arithmetic number, because the mean of its divisors is an integer number (32805539217).

Almost surely, 2^131001243553 is an apocalyptic number.

It is an amenable number.

131001243553 is a deficient number, since it is larger than the sum of its proper divisors (220913315).

131001243553 is an equidigital number, since it uses as much as digits as its factorization.

131001243553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220913314.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 131001243553 its reverse (355342100131), we get a palindrome (486343343684).

The spelling of 131001243553 in words is "one hundred thirty-one billion, one million, two hundred forty-three thousand, five hundred fifty-three".