987372731 has 8 divisors (see below), whose sum is σ = 1011924480. Its totient is φ = 963122472.

The previous prime is 987372709. The next prime is 987372811. The reversal of 987372731 is 137273789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 987372731 - 2²⁶ = 920263867 is a prime.

It is a super-2 number, since 2×987372731² = 1949809819844796722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987372431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68735 + ... + 81848.

It is an arithmetic number, because the mean of its divisors is an integer number (126490560).

Almost surely, 2^987372731 is an apocalyptic number.

987372731 is a deficient number, since it is larger than the sum of its proper divisors (24551749).

987372731 is a wasteful number, since it uses less digits than its factorization.

987372731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150745.

The product of its digits is 444528, while the sum is 47.

The square root of 987372731 is about 31422.4876640918. The cubic root of 987372731 is about 995.7730685580.

The spelling of 987372731 in words is "nine hundred eighty-seven million, three hundred seventy-two thousand, seven hundred thirty-one".