131325554 has 4 divisors (see below), whose sum is σ = 196988334. Its totient is φ = 65662776.

The previous prime is 131325541. The next prime is 131325577. The reversal of 131325554 is 455523131.

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., 128210329 + 3115225 = 11323^2 + 1765^2 .

It is a super-2 number, since 2×131325554² = 34492802266813832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32831387 + ... + 32831390.

Almost surely, 2^131325554 is an apocalyptic number.

131325554 is a deficient number, since it is larger than the sum of its proper divisors (65662780).

131325554 is an equidigital number, since it uses as much as digits as its factorization.

131325554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65662779.

The product of its digits is 9000, while the sum is 29.

The square root of 131325554 is about 11459.7362098785. The cubic root of 131325554 is about 508.2956743818.

Adding to 131325554 its reverse (455523131), we get a palindrome (586848685).

The spelling of 131325554 in words is "one hundred thirty-one million, three hundred twenty-five thousand, five hundred fifty-four".