97731937273 has 2 divisors, whose sum is σ = 97731937274. Its totient is φ = 97731937272.

The previous prime is 97731937241. The next prime is 97731937283. The reversal of 97731937273 is 37273913779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63805244409 + 33926692864 = 252597^2 + 184192^2 .

It is a cyclic number.

It is not a de Polignac number, because 97731937273 - 2⁵ = 97731937241 is a prime.

It is not a weakly prime, because it can be changed into another prime (97731937223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48865968636 + 48865968637.

It is an arithmetic number, because the mean of its divisors is an integer number (48865968637).

Almost surely, 2^97731937273 is an apocalyptic number.

It is an amenable number.

97731937273 is a deficient number, since it is larger than the sum of its proper divisors (1).

97731937273 is an equidigital number, since it uses as much as digits as its factorization.

97731937273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10501974, while the sum is 58.

The spelling of 97731937273 in words is "ninety-seven billion, seven hundred thirty-one million, nine hundred thirty-seven thousand, two hundred seventy-three".