131542070821 has 8 divisors (see below), whose sum is σ = 150336100544. Its totient is φ = 112748617440.

The previous prime is 131542070819. The next prime is 131542070827. The reversal of 131542070821 is 128070245131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131542070821 - 2¹ = 131542070819 is a prime.

It is a super-2 number, since 2×131542070821² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131542070827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603826 + ... + 792268.

It is an arithmetic number, because the mean of its divisors is an integer number (18792012568).

Almost surely, 2^131542070821 is an apocalyptic number.

It is an amenable number.

131542070821 is a deficient number, since it is larger than the sum of its proper divisors (18794029723).

131542070821 is an equidigital number, since it uses as much as digits as its factorization.

131542070821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288171.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 131542070821 in words is "one hundred thirty-one billion, five hundred forty-two million, seventy thousand, eight hundred twenty-one".