97273531 has 4 divisors (see below), whose sum is σ = 97439832. Its totient is φ = 97107232.

The previous prime is 97273523. The next prime is 97273537. The reversal of 97273531 is 13537279.

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 97273531 - 2³ = 97273523 is a prime.

It is a super-2 number, since 2×97273531² = 18924279666415922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97273537) 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, 82270 + ... + 83443.

It is an arithmetic number, because the mean of its divisors is an integer number (24359958).

Almost surely, 2^97273531 is an apocalyptic number.

97273531 is a deficient number, since it is larger than the sum of its proper divisors (166301).

97273531 is a wasteful number, since it uses less digits than its factorization.

97273531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166300.

The product of its digits is 39690, while the sum is 37.

The square root of 97273531 is about 9862.7344585566. The cubic root of 97273531 is about 459.9015715679.

The spelling of 97273531 in words is "ninety-seven million, two hundred seventy-three thousand, five hundred thirty-one".