3938697331 has 8 divisors (see below), whose sum is σ = 3956303120. Its totient is φ = 3921123168.

The previous prime is 3938697311. The next prime is 3938697383. The reversal of 3938697331 is 1337968393.

3938697331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3938697331 - 2⁹ = 3938696819 is a prime.

It is a super-2 number, since 2×3938697331² = 31026673330453047122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3938697311) 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, 261925 + ... + 276553.

It is an arithmetic number, because the mean of its divisors is an integer number (494537890).

Almost surely, 2^3938697331 is an apocalyptic number.

3938697331 is a deficient number, since it is larger than the sum of its proper divisors (17605789).

3938697331 is a wasteful number, since it uses less digits than its factorization.

3938697331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15813.

The product of its digits is 2204496, while the sum is 52.

The square root of 3938697331 is about 62759.0418266563. The cubic root of 3938697331 is about 1579.2499418841.

The spelling of 3938697331 in words is "three billion, nine hundred thirty-eight million, six hundred ninety-seven thousand, three hundred thirty-one".