87417131 has 2 divisors, whose sum is σ = 87417132. Its totient is φ = 87417130.

The previous prime is 87417103. The next prime is 87417137. The reversal of 87417131 is 13171478.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87417131 - 2⁶ = 87417067 is a prime.

It is a super-2 number, since 2×87417131² = 15283509584542322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (87417137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43708565 + 43708566.

It is an arithmetic number, because the mean of its divisors is an integer number (43708566).

Almost surely, 2^87417131 is an apocalyptic number.

87417131 is a deficient number, since it is larger than the sum of its proper divisors (1).

87417131 is an equidigital number, since it uses as much as digits as its factorization.

87417131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 32.

The square root of 87417131 is about 9349.7128832922. The cubic root of 87417131 is about 443.8118047619.

The spelling of 87417131 in words is "eighty-seven million, four hundred seventeen thousand, one hundred thirty-one".