131421152543 has 4 divisors (see below), whose sum is σ = 131797717800. Its totient is φ = 131044587288.

The previous prime is 131421152531. The next prime is 131421152587. The reversal of 131421152543 is 345251124131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131421152543 - 2⁶ = 131421152479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131421152743) 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, 188282105 + ... + 188282802.

It is an arithmetic number, because the mean of its divisors is an integer number (32949429450).

Almost surely, 2^131421152543 is an apocalyptic number.

131421152543 is a deficient number, since it is larger than the sum of its proper divisors (376565257).

131421152543 is an equidigital number, since it uses as much as digits as its factorization.

131421152543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376565256.

The product of its digits is 14400, while the sum is 32.

Adding to 131421152543 its reverse (345251124131), we get a palindrome (476672276674).

The spelling of 131421152543 in words is "one hundred thirty-one billion, four hundred twenty-one million, one hundred fifty-two thousand, five hundred forty-three".