87010031 has 2 divisors, whose sum is σ = 87010032. Its totient is φ = 87010030.

The previous prime is 87010009. The next prime is 87010037. The reversal of 87010031 is 13001078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87010031 - 2¹⁰ = 87009007 is a prime.

It is a super-2 number, since 2×87010031² = 15141490989241922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87009985 and 87010012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87010037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43505015 + 43505016.

It is an arithmetic number, because the mean of its divisors is an integer number (43505016).

Almost surely, 2^87010031 is an apocalyptic number.

87010031 is a deficient number, since it is larger than the sum of its proper divisors (1).

87010031 is an equidigital number, since it uses as much as digits as its factorization.

87010031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 87010031 is about 9327.9167556320. The cubic root of 87010031 is about 443.1217913382.

It can be divided in two parts, 870 and 10031, that added together give a palindrome (10901).

The spelling of 87010031 in words is "eighty-seven million, ten thousand, thirty-one".