198732031 has 2 divisors, whose sum is σ = 198732032. Its totient is φ = 198732030.

The previous prime is 198731999. The next prime is 198732047. The reversal of 198732031 is 130237891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198732031 - 2⁵ = 198731999 is a prime.

It is a super-2 number, since 2×198732031² = 78988840290769922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198732631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99366015 + 99366016.

It is an arithmetic number, because the mean of its divisors is an integer number (99366016).

Almost surely, 2^198732031 is an apocalyptic number.

198732031 is a deficient number, since it is larger than the sum of its proper divisors (1).

198732031 is an equidigital number, since it uses as much as digits as its factorization.

198732031 is an evil number, because the sum of its binary digits is even.

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

The square root of 198732031 is about 14097.2348707113. The cubic root of 198732031 is about 583.5650720800.

It can be divided in two parts, 19873 and 2031, that added together give a square (21904 = 148²).

The spelling of 198732031 in words is "one hundred ninety-eight million, seven hundred thirty-two thousand, thirty-one".