131243000340 has 24 divisors (see below), whose sum is σ = 367480401120. Its totient is φ = 34998133408.

The previous prime is 131243000309. The next prime is 131243000359. The reversal of 131243000340 is 43000342131.

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, 1093691610 + ... + 1093691729.

It is an arithmetic number, because the mean of its divisors is an integer number (15311683380).

Almost surely, 2^131243000340 is an apocalyptic number.

131243000340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131243000340 is an abundant number, since it is smaller than the sum of its proper divisors (236237400780).

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

131243000340 is a wasteful number, since it uses less digits than its factorization.

131243000340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187383351 (or 2187383349 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 131243000340 its reverse (43000342131), we get a palindrome (174243342471).

The spelling of 131243000340 in words is "one hundred thirty-one billion, two hundred forty-three million, three hundred forty", and thus it is an aban number.