87703313 has 2 divisors, whose sum is σ = 87703314. Its totient is φ = 87703312.

The previous prime is 87703277. The next prime is 87703331. The reversal of 87703313 is 31330778.

It is a happy number.

Together with next prime (87703331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58629649 + 29073664 = 7657^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 87703313 - 2¹⁸ = 87441169 is a prime.

It is a super-2 number, since 2×87703313² = 15383742222351938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87703313.

It is not a weakly prime, because it can be changed into another prime (87703333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43851656 + 43851657.

It is an arithmetic number, because the mean of its divisors is an integer number (43851657).

Almost surely, 2^87703313 is an apocalyptic number.

It is an amenable number.

87703313 is a deficient number, since it is larger than the sum of its proper divisors (1).

87703313 is an equidigital number, since it uses as much as digits as its factorization.

87703313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 87703313 is about 9365.0046983437. The cubic root of 87703313 is about 444.2955871327.

The spelling of 87703313 in words is "eighty-seven million, seven hundred three thousand, three hundred thirteen".