131321343042 has 32 divisors (see below), whose sum is σ = 293437522560. Its totient is φ = 43531933680.

The previous prime is 131321343031. The next prime is 131321343061. The reversal of 131321343042 is 240343123131.

It is a happy number.

131321343042 is a `hidden beast` number, since 1 + 3 + 1 + 321 + 34 + 304 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 131321342997 and 131321343015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6708118 + ... + 6727665.

It is an arithmetic number, because the mean of its divisors is an integer number (9169922580).

Almost surely, 2^131321343042 is an apocalyptic number.

131321343042 is an abundant number, since it is smaller than the sum of its proper divisors (162116179518).

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

131321343042 is a wasteful number, since it uses less digits than its factorization.

131321343042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13435975 (or 13435969 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 131321343042 its reverse (240343123131), we get a palindrome (371664466173).

The spelling of 131321343042 in words is "one hundred thirty-one billion, three hundred twenty-one million, three hundred forty-three thousand, forty-two".