131123313021 has 8 divisors (see below), whose sum is σ = 180470796544. Its totient is φ = 84595685760.

The previous prime is 131123313011. The next prime is 131123313047. The reversal of 131123313021 is 120313321131.

It is a happy number.

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

It is not a de Polignac number, because 131123313021 - 2²² = 131119118717 is a prime.

It is a super-3 number, since 3×131123313021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123313011) 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, 704963956 + ... + 704964141.

It is an arithmetic number, because the mean of its divisors is an integer number (22558849568).

Almost surely, 2^131123313021 is an apocalyptic number.

It is an amenable number.

131123313021 is a deficient number, since it is larger than the sum of its proper divisors (49347483523).

131123313021 is a wasteful number, since it uses less digits than its factorization.

131123313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409928131.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131123313021 its reverse (120313321131), we get a palindrome (251436634152).

The spelling of 131123313021 in words is "one hundred thirty-one billion, one hundred twenty-three million, three hundred thirteen thousand, twenty-one".