6960431981 has 4 divisors (see below), whose sum is σ = 6960693600. Its totient is φ = 6960170364.

The previous prime is 6960431917. The next prime is 6960431993. The reversal of 6960431981 is 1891340696.

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 6960431981 - 2⁶ = 6960431917 is a prime.

It is a super-2 number, since 2×6960431981² = 96895226724255168722, 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 (6960931981) 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, 85721 + ... + 145838.

It is an arithmetic number, because the mean of its divisors is an integer number (1740173400).

Almost surely, 2^6960431981 is an apocalyptic number.

It is an amenable number.

6960431981 is a deficient number, since it is larger than the sum of its proper divisors (261619).

6960431981 is a wasteful number, since it uses less digits than its factorization.

6960431981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261618.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 6960431981 is about 83429.2034062414. The cubic root of 6960431981 is about 1909.3200416735.

The spelling of 6960431981 in words is "six billion, nine hundred sixty million, four hundred thirty-one thousand, nine hundred eighty-one".