987470936531 has 4 divisors (see below), whose sum is σ = 987474837792. Its totient is φ = 987467035272.

The previous prime is 987470936519. The next prime is 987470936591. The reversal of 987470936531 is 135639074789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135639074789 = 149 ⋅910329361.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987470936531 is a prime.

It is a super-2 number, since 2×987470936531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987470936591) 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, 1542491 + ... + 2086676.

It is an arithmetic number, because the mean of its divisors is an integer number (246868709448).

Almost surely, 2^987470936531 is an apocalyptic number.

987470936531 is a deficient number, since it is larger than the sum of its proper divisors (3901261).

987470936531 is a wasteful number, since it uses less digits than its factorization.

987470936531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901260.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 987470936531 in words is "nine hundred eighty-seven billion, four hundred seventy million, nine hundred thirty-six thousand, five hundred thirty-one".