660252031 has 2 divisors, whose sum is σ = 660252032. Its totient is φ = 660252030.

The previous prime is 660252029. The next prime is 660252083. The reversal of 660252031 is 130252066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660252031 - 2¹ = 660252029 is a prime.

It is a super-2 number, since 2×660252031² = 871865488879249922, which contains 22 as substring.

Together with 660252029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 660251987 and 660252005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660252011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330126015 + 330126016.

It is an arithmetic number, because the mean of its divisors is an integer number (330126016).

Almost surely, 2^660252031 is an apocalyptic number.

660252031 is a deficient number, since it is larger than the sum of its proper divisors (1).

660252031 is an equidigital number, since it uses as much as digits as its factorization.

660252031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 660252031 is about 25695.3698358284. The cubic root of 660252031 is about 870.7695797612.

The spelling of 660252031 in words is "six hundred sixty million, two hundred fifty-two thousand, thirty-one".