131101421020540 has 24 divisors (see below), whose sum is σ = 277066570036032. Its totient is φ = 52106552047680.

The previous prime is 131101421020487. The next prime is 131101421020567. The reversal of 131101421020540 is 45020124101131.

It is a happy number.

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, 20876019316 + ... + 20876025595.

It is an arithmetic number, because the mean of its divisors is an integer number (11544440418168).

Almost surely, 2^{131101421020540} is an apocalyptic number.

131101421020540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131101421020540 is an abundant number, since it is smaller than the sum of its proper divisors (145965149015492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131101421020540 is a wasteful number, since it uses less digits than its factorization.

131101421020540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41752045077 (or 41752045075 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 131101421020540 its reverse (45020124101131), we get a palindrome (176121545121671).

The spelling of 131101421020540 in words is "one hundred thirty-one trillion, one hundred one billion, four hundred twenty-one million, twenty thousand, five hundred forty".