197848631 has 2 divisors, whose sum is σ = 197848632. Its totient is φ = 197848630.

The previous prime is 197848621. The next prime is 197848639. The reversal of 197848631 is 136848791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197848631 is a prime.

It is a super-2 number, since 2×197848631² = 78288161577148322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197848639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98924315 + 98924316.

It is an arithmetic number, because the mean of its divisors is an integer number (98924316).

Almost surely, 2^197848631 is an apocalyptic number.

197848631 is a deficient number, since it is larger than the sum of its proper divisors (1).

197848631 is an equidigital number, since it uses as much as digits as its factorization.

197848631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 197848631 is about 14065.8675878881. The cubic root of 197848631 is about 582.6991034082.

The spelling of 197848631 in words is "one hundred ninety-seven million, eight hundred forty-eight thousand, six hundred thirty-one".