131030132021 has 4 divisors (see below), whose sum is σ = 132061865472. Its totient is φ = 129998398572.

The previous prime is 131030132017. The next prime is 131030132081. The reversal of 131030132021 is 120231030131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120231030131 = 349 ⋅344501519.

It is a cyclic number.

It is not a de Polignac number, because 131030132021 - 2² = 131030132017 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 (131030132081) 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, 515866535 + ... + 515866788.

It is an arithmetic number, because the mean of its divisors is an integer number (33015466368).

Almost surely, 2^131030132021 is an apocalyptic number.

It is an amenable number.

131030132021 is a deficient number, since it is larger than the sum of its proper divisors (1031733451).

131030132021 is a wasteful number, since it uses less digits than its factorization.

131030132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031733450.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131030132021 its reverse (120231030131), we get a palindrome (251261162152).

The spelling of 131030132021 in words is "one hundred thirty-one billion, thirty million, one hundred thirty-two thousand, twenty-one".