972201031 has 2 divisors, whose sum is σ = 972201032. Its totient is φ = 972201030.

The previous prime is 972201029. The next prime is 972201071. The reversal of 972201031 is 130102279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 972201031 - 2¹ = 972201029 is a prime.

It is a super-2 number, since 2×972201031² = 1890349689354925922, which contains 22 as substring.

Together with 972201029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 972200987 and 972201005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972201071) by changing a digit.

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, 486100515 + 486100516.

It is an arithmetic number, because the mean of its divisors is an integer number (486100516).

Almost surely, 2^972201031 is an apocalyptic number.

972201031 is a deficient number, since it is larger than the sum of its proper divisors (1).

972201031 is an equidigital number, since it uses as much as digits as its factorization.

972201031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 972201031 is about 31180.1384057223. The cubic root of 972201031 is about 990.6464610861.

The spelling of 972201031 in words is "nine hundred seventy-two million, two hundred one thousand, thirty-one".