397316966381 has 8 divisors (see below), whose sum is σ = 403057542528. Its totient is φ = 391580406000.

The previous prime is 397316966311. The next prime is 397316966441. The reversal of 397316966381 is 183669613793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397316966381 is a prime.

It is a super-2 number, since 2×397316966381² (a number of 24 digits) 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 (397316966311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804350 + ... + 1200671.

It is an arithmetic number, because the mean of its divisors is an integer number (50382192816).

Almost surely, 2^397316966381 is an apocalyptic number.

It is an amenable number.

397316966381 is a deficient number, since it is larger than the sum of its proper divisors (5740576147).

397316966381 is a wasteful number, since it uses less digits than its factorization.

397316966381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007883.

The product of its digits is 26453952, while the sum is 62.

The spelling of 397316966381 in words is "three hundred ninety-seven billion, three hundred sixteen million, nine hundred sixty-six thousand, three hundred eighty-one".