97644031 has 2 divisors, whose sum is σ = 97644032. Its totient is φ = 97644030.

The previous prime is 97644023. The next prime is 97644037. The reversal of 97644031 is 13044679.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13044679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97644031 - 2³ = 97644023 is a prime.

It is a super-2 number, since 2×97644031² = 19068713579857922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97644037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48822015 + 48822016.

It is an arithmetic number, because the mean of its divisors is an integer number (48822016).

Almost surely, 2^97644031 is an apocalyptic number.

97644031 is a deficient number, since it is larger than the sum of its proper divisors (1).

97644031 is an equidigital number, since it uses as much as digits as its factorization.

97644031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 97644031 is about 9881.4994307544. The cubic root of 97644031 is about 460.4847300518.

The spelling of 97644031 in words is "ninety-seven million, six hundred forty-four thousand, thirty-one".