131142023030402 has 4 divisors (see below), whose sum is σ = 196713034545606. Its totient is φ = 65571011515200.

The previous prime is 131142023030393. The next prime is 131142023030443. The reversal of 131142023030402 is 204030320241131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80894212562641 + 50247810467761 = 8994121^2 + 7088569^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32785505757599 + ... + 32785505757602.

Almost surely, 2^{131142023030402} is an apocalyptic number.

131142023030402 is a deficient number, since it is larger than the sum of its proper divisors (65571011515204).

131142023030402 is an equidigital number, since it uses as much as digits as its factorization.

131142023030402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65571011515203.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 131142023030402 its reverse (204030320241131), we get a palindrome (335172343271533).

The spelling of 131142023030402 in words is "one hundred thirty-one trillion, one hundred forty-two billion, twenty-three million, thirty thousand, four hundred two".