99131242501 has 2 divisors, whose sum is σ = 99131242502. Its totient is φ = 99131242500.

The previous prime is 99131242459. The next prime is 99131242547. The reversal of 99131242501 is 10524213199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55661077476 + 43470165025 = 235926^2 + 208495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99131242501 is a prime.

It is a super-3 number, since 3×99131242501³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99131242591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49565621250 + 49565621251.

It is an arithmetic number, because the mean of its divisors is an integer number (49565621251).

Almost surely, 2^99131242501 is an apocalyptic number.

It is an amenable number.

99131242501 is a deficient number, since it is larger than the sum of its proper divisors (1).

99131242501 is an equidigital number, since it uses as much as digits as its factorization.

99131242501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 99131242501 in words is "ninety-nine billion, one hundred thirty-one million, two hundred forty-two thousand, five hundred one".