131142333402 has 24 divisors (see below), whose sum is σ = 300855942036. Its totient is φ = 41142692736.

The previous prime is 131142333391. The next prime is 131142333431. The reversal of 131142333402 is 204333241131.

It is a happy number.

131142333402 is a `hidden beast` number, since 1 + 311 + 4 + 2 + 3 + 3 + 340 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 101729740401 + 29412593001 = 318951^2 + 171501^2 .

It is a super-2 number, since 2×131142333402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214284553 + ... + 214285164.

Almost surely, 2^131142333402 is an apocalyptic number.

131142333402 is an abundant number, since it is smaller than the sum of its proper divisors (169713608634).

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

131142333402 is a wasteful number, since it uses less digits than its factorization.

131142333402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428569742 (or 428569739 counting only the distinct ones).

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

Adding to 131142333402 its reverse (204333241131), we get a palindrome (335475574533).

The spelling of 131142333402 in words is "one hundred thirty-one billion, one hundred forty-two million, three hundred thirty-three thousand, four hundred two".