87264031 has 4 divisors (see below), whose sum is σ = 89392464. Its totient is φ = 85135600.

The previous prime is 87264029. The next prime is 87264053. The reversal of 87264031 is 13046278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87264031 - 2¹ = 87264029 is a prime.

It is a super-2 number, since 2×87264031² = 15230022212737922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 87263984 and 87264002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87264431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064155 + ... + 1064236.

It is an arithmetic number, because the mean of its divisors is an integer number (22348116).

Almost surely, 2^87264031 is an apocalyptic number.

87264031 is a deficient number, since it is larger than the sum of its proper divisors (2128433).

87264031 is a wasteful number, since it uses less digits than its factorization.

87264031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128432.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 87264031 is about 9341.5218781524. The cubic root of 87264031 is about 443.5525600259.

The spelling of 87264031 in words is "eighty-seven million, two hundred sixty-four thousand, thirty-one".