97428444031 has 4 divisors (see below), whose sum is σ = 103159528992. Its totient is φ = 91697359072.

The previous prime is 97428444019. The next prime is 97428444077. The reversal of 97428444031 is 13044482479.

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 97428444031 - 2¹⁷ = 97428312959 is a prime.

It is a super-2 number, since 2×97428444031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97428444331) 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, 2865542455 + ... + 2865542488.

It is an arithmetic number, because the mean of its divisors is an integer number (25789882248).

Almost surely, 2^97428444031 is an apocalyptic number.

97428444031 is a deficient number, since it is larger than the sum of its proper divisors (5731084961).

97428444031 is a wasteful number, since it uses less digits than its factorization.

97428444031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5731084960.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 97428444031 in words is "ninety-seven billion, four hundred twenty-eight million, four hundred forty-four thousand, thirty-one".