6988961331 has 18 divisors (see below), whose sum is σ = 11096341620. Its totient is φ = 4235733480.

The previous prime is 6988961323. The next prime is 6988961347. The reversal of 6988961331 is 1331698896.

It is not a de Polignac number, because 6988961331 - 2³ = 6988961323 is a prime.

It is a super-2 number, since 2×6988961331² = 97691160972426583122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6988961351) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3207801 + ... + 3209978.

Almost surely, 2^6988961331 is an apocalyptic number.

6988961331 is a deficient number, since it is larger than the sum of its proper divisors (4107380289).

6988961331 is a wasteful number, since it uses less digits than its factorization.

6988961331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6417807 (or 6417793 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 6988961331 is about 83600.0079605259. The cubic root of 6988961331 is about 1911.9251197420.

The spelling of 6988961331 in words is "six billion, nine hundred eighty-eight million, nine hundred sixty-one thousand, three hundred thirty-one".