131428322 has 8 divisors (see below), whose sum is σ = 197230572. Its totient is φ = 65684800.

The previous prime is 131428267. The next prime is 131428327. The reversal of 131428322 is 223824131.

It can be written as a sum of positive squares in 2 ways, for example, as 129299641 + 2128681 = 11371^2 + 1459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 131428291 and 131428300.

It is not an unprimeable number, because it can be changed into a prime (131428327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8579 + ... + 18342.

Almost surely, 2^131428322 is an apocalyptic number.

131428322 is a deficient number, since it is larger than the sum of its proper divisors (65802250).

131428322 is a wasteful number, since it uses less digits than its factorization.

131428322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29364.

The product of its digits is 2304, while the sum is 26.

The square root of 131428322 is about 11464.2192058596. The cubic root of 131428322 is about 508.4282276902.

The spelling of 131428322 in words is "one hundred thirty-one million, four hundred twenty-eight thousand, three hundred twenty-two".