197328031 has 4 divisors (see below), whose sum is σ = 197491392. Its totient is φ = 197164672.

The previous prime is 197328029. The next prime is 197328049. The reversal of 197328031 is 130823791.

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 197328031 - 2¹ = 197328029 is a prime.

It is a super-2 number, since 2×197328031² = 77876703636673922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197328071) 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, 79855 + ... + 82288.

It is an arithmetic number, because the mean of its divisors is an integer number (49372848).

Almost surely, 2^197328031 is an apocalyptic number.

197328031 is a deficient number, since it is larger than the sum of its proper divisors (163361).

197328031 is a wasteful number, since it uses less digits than its factorization.

197328031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163360.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 197328031 is about 14047.3496076662. The cubic root of 197328031 is about 582.1875682128.

The spelling of 197328031 in words is "one hundred ninety-seven million, three hundred twenty-eight thousand, thirty-one".