972213127 has 4 divisors (see below), whose sum is σ = 983136960. Its totient is φ = 961289296.

The previous prime is 972213089. The next prime is 972213163. The reversal of 972213127 is 721312279.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972213127 is a prime.

It is a super-2 number, since 2×972213127² = 1890396728622236258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 972213092 and 972213101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972213167) 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, 5461783 + ... + 5461960.

It is an arithmetic number, because the mean of its divisors is an integer number (245784240).

Almost surely, 2^972213127 is an apocalyptic number.

972213127 is a deficient number, since it is larger than the sum of its proper divisors (10923833).

972213127 is a wasteful number, since it uses less digits than its factorization.

972213127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923832.

The product of its digits is 10584, while the sum is 34.

The square root of 972213127 is about 31180.3323747519. The cubic root of 972213127 is about 990.6505695676.

The spelling of 972213127 in words is "nine hundred seventy-two million, two hundred thirteen thousand, one hundred twenty-seven".