974387131 has 4 divisors (see below), whose sum is σ = 975191632. Its totient is φ = 973582632.

The previous prime is 974387123. The next prime is 974387143. The reversal of 974387131 is 131783479.

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 974387131 - 2³ = 974387123 is a prime.

It is a super-4 number, since 4×974387131⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (974387101) 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, 400431 + ... + 402856.

It is an arithmetic number, because the mean of its divisors is an integer number (243797908).

Almost surely, 2^974387131 is an apocalyptic number.

974387131 is a deficient number, since it is larger than the sum of its proper divisors (804501).

974387131 is a wasteful number, since it uses less digits than its factorization.

974387131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804500.

The product of its digits is 127008, while the sum is 43.

The square root of 974387131 is about 31215.1746911658. The cubic root of 974387131 is about 991.3884307505.

The spelling of 974387131 in words is "nine hundred seventy-four million, three hundred eighty-seven thousand, one hundred thirty-one".