231973601 has 2 divisors, whose sum is σ = 231973602. Its totient is φ = 231973600.

The previous prime is 231973559. The next prime is 231973673. The reversal of 231973601 is 106379132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174213601 + 57760000 = 13199^2 + 7600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231973601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231973681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115986800 + 115986801.

It is an arithmetic number, because the mean of its divisors is an integer number (115986801).

Almost surely, 2^231973601 is an apocalyptic number.

It is an amenable number.

231973601 is a deficient number, since it is larger than the sum of its proper divisors (1).

231973601 is an equidigital number, since it uses as much as digits as its factorization.

231973601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 231973601 is about 15230.6795974441. The cubic root of 231973601 is about 614.4400579049.

The spelling of 231973601 in words is "two hundred thirty-one million, nine hundred seventy-three thousand, six hundred one".