131032424021 has 8 divisors (see below), whose sum is σ = 138856901400. Its totient is φ = 123428354560.

The previous prime is 131032424009. The next prime is 131032424057. The reversal of 131032424021 is 120424230131.

It can be written as a sum of positive squares in 4 ways, for example, as 19068571921 + 111963852100 = 138089^2 + 334610^2 .

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 131032424021 - 2⁶ = 131032423957 is a prime.

It is a super-2 number, since 2×131032424021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131032424221) 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, 55100756 + ... + 55103133.

It is an arithmetic number, because the mean of its divisors is an integer number (17357112675).

Almost surely, 2^131032424021 is an apocalyptic number.

It is an amenable number.

131032424021 is a deficient number, since it is larger than the sum of its proper divisors (7824477379).

131032424021 is a wasteful number, since it uses less digits than its factorization.

131032424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110203959.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 131032424021 its reverse (120424230131), we get a palindrome (251456654152).

The spelling of 131032424021 in words is "one hundred thirty-one billion, thirty-two million, four hundred twenty-four thousand, twenty-one".