97123753281 has 4 divisors (see below), whose sum is σ = 129498337712. Its totient is φ = 64749168852.

The previous prime is 97123753267. The next prime is 97123753313. The reversal of 97123753281 is 18235732179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 97123753281 - 2¹⁵ = 97123720513 is a prime.

It is a super-2 number, since 2×97123753281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97123753281.

It is not an unprimeable number, because it can be changed into a prime (97123753781) 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, 16187292211 + ... + 16187292216.

It is an arithmetic number, because the mean of its divisors is an integer number (32374584428).

Almost surely, 2^97123753281 is an apocalyptic number.

It is an amenable number.

97123753281 is a deficient number, since it is larger than the sum of its proper divisors (32374584431).

97123753281 is a wasteful number, since it uses less digits than its factorization.

97123753281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32374584430.

The product of its digits is 635040, while the sum is 48.

The spelling of 97123753281 in words is "ninety-seven billion, one hundred twenty-three million, seven hundred fifty-three thousand, two hundred eighty-one".