352019981 has 2 divisors, whose sum is σ = 352019982. Its totient is φ = 352019980.

The previous prime is 352019957. The next prime is 352020001. The reversal of 352019981 is 189910253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293573956 + 58446025 = 17134^2 + 7645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-352019981 is a prime.

It is a super-3 number, since 3×352019981³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352019581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176009990 + 176009991.

It is an arithmetic number, because the mean of its divisors is an integer number (176009991).

Almost surely, 2^352019981 is an apocalyptic number.

It is an amenable number.

352019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

352019981 is an equidigital number, since it uses as much as digits as its factorization.

352019981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 352019981 is about 18762.1955271765. The cubic root of 352019981 is about 706.0830266401.

The spelling of 352019981 in words is "three hundred fifty-two million, nineteen thousand, nine hundred eighty-one".