131142121 has 8 divisors (see below), whose sum is σ = 147679488. Its totient is φ = 115374000.

The previous prime is 131142119. The next prime is 131142127. The reversal of 131142121 is 121241131.

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 131142121 - 2¹ = 131142119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131142095 and 131142104.

It is not an unprimeable number, because it can be changed into a prime (131142127) 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, 191950 + ... + 192631.

It is an arithmetic number, because the mean of its divisors is an integer number (18459936).

Almost surely, 2^131142121 is an apocalyptic number.

131142121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131142121 is a deficient number, since it is larger than the sum of its proper divisors (16537367).

131142121 is a wasteful number, since it uses less digits than its factorization.

131142121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384623.

The product of its digits is 48, while the sum is 16.

The square root of 131142121 is about 11451.7300439715. The cubic root of 131142121 is about 508.0589049123.

Adding to 131142121 its reverse (121241131), we get a palindrome (252383252).

The spelling of 131142121 in words is "one hundred thirty-one million, one hundred forty-two thousand, one hundred twenty-one".