131143231001242 has 16 divisors (see below), whose sum is σ = 197079917415264. Its totient is φ = 65449926990000.

The previous prime is 131143231001183. The next prime is 131143231001309. The reversal of 131143231001242 is 242100132341131.

It is a self number, because there is not a number n which added to its sum of digits gives 131143231001242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179172117 + ... + 179902567.

It is an arithmetic number, because the mean of its divisors is an integer number (12317494838454).

Almost surely, 2^{131143231001242} is an apocalyptic number.

131143231001242 is a deficient number, since it is larger than the sum of its proper divisors (65936686414022).

131143231001242 is a wasteful number, since it uses less digits than its factorization.

131143231001242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896925.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 131143231001242 its reverse (242100132341131), we get a palindrome (373243363342373).

The spelling of 131143231001242 in words is "one hundred thirty-one trillion, one hundred forty-three billion, two hundred thirty-one million, one thousand, two hundred forty-two".