971988232 has 8 divisors (see below), whose sum is σ = 1822477950. Its totient is φ = 485994112.

The previous prime is 971988223. The next prime is 971988289. The reversal of 971988232 is 232889179.

It can be written as a sum of positive squares in only one way, i.e., 742344516 + 229643716 = 27246^2 + 15154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×971988232² = 1889522246292971648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60749257 + ... + 60749272.

Almost surely, 2^971988232 is an apocalyptic number.

It is an amenable number.

971988232 is a deficient number, since it is larger than the sum of its proper divisors (850489718).

971988232 is a wasteful number, since it uses less digits than its factorization.

971988232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121498535 (or 121498531 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 971988232 is about 31176.7258062806. The cubic root of 971988232 is about 990.5741770103.

The spelling of 971988232 in words is "nine hundred seventy-one million, nine hundred eighty-eight thousand, two hundred thirty-two".