31770840986 has 8 divisors (see below), whose sum is σ = 48944268660. Its totient is φ = 15456084768.

The previous prime is 31770840979. The next prime is 31770841007. The reversal of 31770840986 is 68904807713.

It can be written as a sum of positive squares in 2 ways, for example, as 27574263025 + 4196577961 = 166055^2 + 64781^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214667771 + ... + 214667918.

Almost surely, 2^31770840986 is an apocalyptic number.

31770840986 is a deficient number, since it is larger than the sum of its proper divisors (17173427674).

31770840986 is a wasteful number, since it uses less digits than its factorization.

31770840986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429335728.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 31770840986 in words is "thirty-one billion, seven hundred seventy million, eight hundred forty thousand, nine hundred eighty-six".