131021320142142 has 128 divisors (see below), whose sum is σ = 292745805004800. Its totient is φ = 43436528305632.

The previous prime is 131021320142107. The next prime is 131021320142149. The reversal of 131021320142142 is 241241023120131.

131021320142142 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 213 + 20 + 1 + 421 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021320142149) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10350046609 + ... + 10350059267.

It is an arithmetic number, because the mean of its divisors is an integer number (2287076601600).

Almost surely, 2^{131021320142142} is an apocalyptic number.

131021320142142 is an abundant number, since it is smaller than the sum of its proper divisors (161724484862658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131021320142142 is a wasteful number, since it uses less digits than its factorization.

131021320142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14459 (or 14453 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 131021320142142 its reverse (241241023120131), we get a palindrome (372262343262273).

The spelling of 131021320142142 in words is "one hundred thirty-one trillion, twenty-one billion, three hundred twenty million, one hundred forty-two thousand, one hundred forty-two".