130731322 has 4 divisors (see below), whose sum is σ = 196096986. Its totient is φ = 65365660.

The previous prime is 130731311. The next prime is 130731347. The reversal of 130731322 is 223137031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223137031 = 13 ⋅17164387.

It can be written as a sum of positive squares in only one way, i.e., 90269001 + 40462321 = 9501^2 + 6361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130731293 and 130731302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32682829 + ... + 32682832.

Almost surely, 2^130731322 is an apocalyptic number.

130731322 is a deficient number, since it is larger than the sum of its proper divisors (65365664).

130731322 is an equidigital number, since it uses as much as digits as its factorization.

130731322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65365663.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 130731322 is about 11433.7798649441. The cubic root of 130731322 is about 507.5278566249.

Adding to 130731322 its reverse (223137031), we get a palindrome (353868353).

The spelling of 130731322 in words is "one hundred thirty million, seven hundred thirty-one thousand, three hundred twenty-two".