131321106562 has 4 divisors (see below), whose sum is σ = 196981659846. Its totient is φ = 65660553280.

The previous prime is 131321106529. The next prime is 131321106569. The reversal of 131321106562 is 265601123131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 265601123131 = 6101 ⋅43534031.

It can be written as a sum of positive squares in only one way, i.e., 72781787961 + 58539318601 = 269781^2 + 241949^2 .

It is not an unprimeable number, because it can be changed into a prime (131321106569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32830276639 + ... + 32830276642.

Almost surely, 2^131321106562 is an apocalyptic number.

131321106562 is a deficient number, since it is larger than the sum of its proper divisors (65660553284).

131321106562 is an equidigital number, since it uses as much as digits as its factorization.

131321106562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65660553283.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 131321106562 its reverse (265601123131), we get a palindrome (396922229693).

The spelling of 131321106562 in words is "one hundred thirty-one billion, three hundred twenty-one million, one hundred six thousand, five hundred sixty-two".