131103340020521 has 32 divisors (see below), whose sum is σ = 146323958799360. Its totient is φ = 116463885912000.

The previous prime is 131103340020511. The next prime is 131103340020559. The reversal of 131103340020521 is 125020043301131.

It is not a de Polignac number, because 131103340020521 - 2³⁴ = 131086160151337 is a prime.

It is a super-2 number, since 2×131103340020521² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131103340020511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78071690 + ... + 79733276.

It is an arithmetic number, because the mean of its divisors is an integer number (4572623712480).

Almost surely, 2^{131103340020521} is an apocalyptic number.

131103340020521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131103340020521 is a deficient number, since it is larger than the sum of its proper divisors (15220618778839).

131103340020521 is a wasteful number, since it uses less digits than its factorization.

131103340020521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662525.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 131103340020521 its reverse (125020043301131), we get a palindrome (256123383321652).

The spelling of 131103340020521 in words is "one hundred thirty-one trillion, one hundred three billion, three hundred forty million, twenty thousand, five hundred twenty-one".