131146630021 has 4 divisors (see below), whose sum is σ = 143069050944. Its totient is φ = 119224209100.

The previous prime is 131146629953. The next prime is 131146630037. The reversal of 131146630021 is 120036641131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131146630021 - 2¹⁹ = 131146105733 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 (131146630091) 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, 5961210445 + ... + 5961210466.

It is an arithmetic number, because the mean of its divisors is an integer number (35767262736).

Almost surely, 2^131146630021 is an apocalyptic number.

131146630021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131146630021 is a deficient number, since it is larger than the sum of its proper divisors (11922420923).

131146630021 is a wasteful number, since it uses less digits than its factorization.

131146630021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11922420922.

The product of its (nonzero) digits is 2592, while the sum is 28.

It can be divided in two parts, 131146 and 630021, that added together give a palindrome (761167).

The spelling of 131146630021 in words is "one hundred thirty-one billion, one hundred forty-six million, six hundred thirty thousand, twenty-one".