197135743321 has 8 divisors (see below), whose sum is σ = 215061833088. Its totient is φ = 179210430000.

The previous prime is 197135743319. The next prime is 197135743327. The reversal of 197135743321 is 123347531791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197135743321 - 2¹ = 197135743319 is a prime.

It is a super-2 number, since 2×197135743321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197135743327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421731 + ... + 756391.

It is an arithmetic number, because the mean of its divisors is an integer number (26882729136).

Almost surely, 2^197135743321 is an apocalyptic number.

197135743321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

197135743321 is a deficient number, since it is larger than the sum of its proper divisors (17926089767).

197135743321 is a wasteful number, since it uses less digits than its factorization.

197135743321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388223.

The product of its digits is 476280, while the sum is 46.

The spelling of 197135743321 in words is "one hundred ninety-seven billion, one hundred thirty-five million, seven hundred forty-three thousand, three hundred twenty-one".