87303131 has 2 divisors, whose sum is σ = 87303132. Its totient is φ = 87303130.

The previous prime is 87303121. The next prime is 87303169. The reversal of 87303131 is 13130378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87303131 - 2¹⁴ = 87286747 is a prime.

It is a super-3 number, since 3×87303131³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87303131.

It is not a weakly prime, because it can be changed into another prime (87303121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43651565 + 43651566.

It is an arithmetic number, because the mean of its divisors is an integer number (43651566).

Almost surely, 2^87303131 is an apocalyptic number.

87303131 is a deficient number, since it is larger than the sum of its proper divisors (1).

87303131 is an equidigital number, since it uses as much as digits as its factorization.

87303131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 87303131 is about 9343.6144505218. The cubic root of 87303131 is about 443.6187969977.

The spelling of 87303131 in words is "eighty-seven million, three hundred three thousand, one hundred thirty-one".