87260031 has 32 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 54345600.

The previous prime is 87260021. The next prime is 87260053. The reversal of 87260031 is 13006278.

It is not a de Polignac number, because 87260031 - 2⁷ = 87259903 is a prime.

It is a super-2 number, since 2×87260031² = 15228626020241922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 87259977 and 87260004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87260011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68680 + ... + 69938.

It is an arithmetic number, because the mean of its divisors is an integer number (4309200).

Almost surely, 2^87260031 is an apocalyptic number.

87260031 is a deficient number, since it is larger than the sum of its proper divisors (50634369).

87260031 is a wasteful number, since it uses less digits than its factorization.

87260031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 87260031 is about 9341.3077778221. The cubic root of 87260031 is about 443.5457827496.

The spelling of 87260031 in words is "eighty-seven million, two hundred sixty thousand, thirty-one".