131505021356 has 12 divisors (see below), whose sum is σ = 230138998992. Its totient is φ = 65751021648.

The previous prime is 131505021257. The next prime is 131505021359. The reversal of 131505021356 is 653120505131.

131505021356 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131505021359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160115 + ... + 537258.

It is an arithmetic number, because the mean of its divisors is an integer number (19178249916).

Almost surely, 2^131505021356 is an apocalyptic number.

It is an amenable number.

131505021356 is a deficient number, since it is larger than the sum of its proper divisors (98633977636).

131505021356 is a wasteful number, since it uses less digits than its factorization.

131505021356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744520 (or 744518 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

Adding to 131505021356 its reverse (653120505131), we get a palindrome (784625526487).

The spelling of 131505021356 in words is "one hundred thirty-one billion, five hundred five million, twenty-one thousand, three hundred fifty-six".