363097981 has 4 divisors (see below), whose sum is σ = 363382272. Its totient is φ = 362813692.

The previous prime is 363097967. The next prime is 363097993. The reversal of 363097981 is 189790363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 363097981 - 2⁷ = 363097853 is a prime.

It is a super-2 number, since 2×363097981² = 263680287612552722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363097921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140221 + ... + 142786.

It is an arithmetic number, because the mean of its divisors is an integer number (90845568).

Almost surely, 2^363097981 is an apocalyptic number.

It is an amenable number.

363097981 is a deficient number, since it is larger than the sum of its proper divisors (284291).

363097981 is a wasteful number, since it uses less digits than its factorization.

363097981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284290.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 363097981 is about 19055.1300441640. The cubic root of 363097981 is about 713.4134256349.

The spelling of 363097981 in words is "three hundred sixty-three million, ninety-seven thousand, nine hundred eighty-one".