131551634 has 4 divisors (see below), whose sum is σ = 197327454. Its totient is φ = 65775816.

The previous prime is 131551603. The next prime is 131551643. The reversal of 131551634 is 436155131.

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., 120012025 + 11539609 = 10955^2 + 3397^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131551597 and 131551606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32887907 + ... + 32887910.

Almost surely, 2^131551634 is an apocalyptic number.

131551634 is a deficient number, since it is larger than the sum of its proper divisors (65775820).

131551634 is an equidigital number, since it uses as much as digits as its factorization.

131551634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65775819.

The product of its digits is 5400, while the sum is 29.

The square root of 131551634 is about 11469.5960696094. The cubic root of 131551634 is about 508.5871881107.

The spelling of 131551634 in words is "one hundred thirty-one million, five hundred fifty-one thousand, six hundred thirty-four".