31598141 has 2 divisors, whose sum is σ = 31598142. Its totient is φ = 31598140.

The previous prime is 31598137. The next prime is 31598143. The reversal of 31598141 is 14189513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31595641 + 2500 = 5621^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 31598141 - 2² = 31598137 is a prime.

Together with 31598143, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31598098 and 31598107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31598143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15799070 + 15799071.

It is an arithmetic number, because the mean of its divisors is an integer number (15799071).

Almost surely, 2^31598141 is an apocalyptic number.

It is an amenable number.

31598141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31598141 is an equidigital number, since it uses as much as digits as its factorization.

31598141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 31598141 is about 5621.2223759606. Note that the first 3 decimals coincide. The cubic root of 31598141 is about 316.1456260106.

The spelling of 31598141 in words is "thirty-one million, five hundred ninety-eight thousand, one hundred forty-one".