131023200121 has 8 divisors (see below), whose sum is σ = 142937073504. Its totient is φ = 119109772320.

The previous prime is 131023200101. The next prime is 131023200137. The reversal of 131023200121 is 121002320131.

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

It is not a de Polignac number, because 131023200121 - 2⁵ = 131023200089 is a prime.

It is a super-2 number, since 2×131023200121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131023200095 and 131023200104.

It is not an unprimeable number, because it can be changed into a prime (131023200101) 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, 913341 + ... + 1047013.

It is an arithmetic number, because the mean of its divisors is an integer number (17867134188).

Almost surely, 2^131023200121 is an apocalyptic number.

131023200121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131023200121 is a deficient number, since it is larger than the sum of its proper divisors (11913873383).

131023200121 is a wasteful number, since it uses less digits than its factorization.

131023200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222791.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131023200121 its reverse (121002320131), we get a palindrome (252025520252).

The spelling of 131023200121 in words is "one hundred thirty-one billion, twenty-three million, two hundred thousand, one hundred twenty-one".