87241431 has 4 divisors (see below), whose sum is σ = 116321912. Its totient is φ = 58160952.

The previous prime is 87241423. The next prime is 87241439. The reversal of 87241431 is 13414278.

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

It is an interprime number because it is at equal distance from previous prime (87241423) and next prime (87241439).

It is not a de Polignac number, because 87241431 - 2³ = 87241423 is a prime.

It is a super-2 number, since 2×87241431² = 15222134565855522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87241439) 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, 14540236 + ... + 14540241.

It is an arithmetic number, because the mean of its divisors is an integer number (29080478).

Almost surely, 2^87241431 is an apocalyptic number.

87241431 is a deficient number, since it is larger than the sum of its proper divisors (29080481).

87241431 is a wasteful number, since it uses less digits than its factorization.

87241431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29080480.

The product of its digits is 5376, while the sum is 30.

The square root of 87241431 is about 9340.3121468182. The cubic root of 87241431 is about 443.5142656938.

The spelling of 87241431 in words is "eighty-seven million, two hundred forty-one thousand, four hundred thirty-one".