131510121 has 8 divisors (see below), whose sum is σ = 175404960. Its totient is φ = 87644352.

The previous prime is 131510117. The next prime is 131510129. The reversal of 131510121 is 121015131.

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

It is not a de Polignac number, because 131510121 - 2² = 131510117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131510121.

It is not an unprimeable number, because it can be changed into a prime (131510129) 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, 7690 + ... + 17948.

It is an arithmetic number, because the mean of its divisors is an integer number (21925620).

Almost surely, 2^131510121 is an apocalyptic number.

It is an amenable number.

131510121 is a deficient number, since it is larger than the sum of its proper divisors (43894839).

131510121 is a wasteful number, since it uses less digits than its factorization.

131510121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14535.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 131510121 is about 11467.7862292598. The cubic root of 131510121 is about 508.5336851615.

Adding to 131510121 its reverse (121015131), we get a palindrome (252525252).

The spelling of 131510121 in words is "one hundred thirty-one million, five hundred ten thousand, one hundred twenty-one".