131020140100340 has 24 divisors (see below), whose sum is σ = 275144433488232. Its totient is φ = 52407648558720.

The previous prime is 131020140100271. The next prime is 131020140100357. The reversal of 131020140100340 is 43001041020131.

It can be written as a sum of positive squares in 4 ways, for example, as 7330642890256 + 123689497210084 = 2707516^2 + 11121578^2 .

It is a super-2 number, since 2×131020140100340² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 22824299 + ... + 27981938.

It is an arithmetic number, because the mean of its divisors is an integer number (11464351395343).

Almost surely, 2^{131020140100340} is an apocalyptic number.

131020140100340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020140100340 is an abundant number, since it is smaller than the sum of its proper divisors (144124293387892).

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

131020140100340 is a wasteful number, since it uses less digits than its factorization.

131020140100340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50935187 (or 50935185 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131020140100340 its reverse (43001041020131), we get a palindrome (174021181120471).

The spelling of 131020140100340 in words is "one hundred thirty-one trillion, twenty billion, one hundred forty million, one hundred thousand, three hundred forty".