131212727340 has 48 divisors (see below), whose sum is σ = 367411349760. Its totient is φ = 34988564160.

The previous prime is 131212727293. The next prime is 131212727351. The reversal of 131212727340 is 43727212131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2764731 + ... + 2811789.

It is an arithmetic number, because the mean of its divisors is an integer number (7654403120).

Almost surely, 2^131212727340 is an apocalyptic number.

131212727340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212727340 is an abundant number, since it is smaller than the sum of its proper divisors (236198622420).

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

131212727340 is a wasteful number, since it uses less digits than its factorization.

131212727340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93542 (or 93540 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

Adding to 131212727340 its reverse (43727212131), we get a palindrome (174939939471).

The spelling of 131212727340 in words is "one hundred thirty-one billion, two hundred twelve million, seven hundred twenty-seven thousand, three hundred forty".