131144232442 has 4 divisors (see below), whose sum is σ = 196716348666. Its totient is φ = 65572116220.

The previous prime is 131144232383. The next prime is 131144232451. The reversal of 131144232442 is 244232441131.

It is a happy number.

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., 127057315401 + 4086917041 = 356451^2 + 63929^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32786058109 + ... + 32786058112.

Almost surely, 2^131144232442 is an apocalyptic number.

131144232442 is a deficient number, since it is larger than the sum of its proper divisors (65572116224).

131144232442 is an equidigital number, since it uses as much as digits as its factorization.

131144232442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65572116223.

The product of its digits is 18432, while the sum is 31.

Adding to 131144232442 its reverse (244232441131), we get a palindrome (375376673573).

The spelling of 131144232442 in words is "one hundred thirty-one billion, one hundred forty-four million, two hundred thirty-two thousand, four hundred forty-two".