131089633 has 2 divisors, whose sum is σ = 131089634. Its totient is φ = 131089632.

The previous prime is 131089579. The next prime is 131089663. The reversal of 131089633 is 336980131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116899344 + 14190289 = 10812^2 + 3767^2 .

It is an emirp because it is prime and its reverse (336980131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131089633 is a prime.

It is not a weakly prime, because it can be changed into another prime (131089663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65544816 + 65544817.

It is an arithmetic number, because the mean of its divisors is an integer number (65544817).

Almost surely, 2^131089633 is an apocalyptic number.

It is an amenable number.

131089633 is a deficient number, since it is larger than the sum of its proper divisors (1).

131089633 is an equidigital number, since it uses as much as digits as its factorization.

131089633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 131089633 is about 11449.4381084838. The cubic root of 131089633 is about 507.9911144518.

The spelling of 131089633 in words is "one hundred thirty-one million, eighty-nine thousand, six hundred thirty-three".