31970453779 has 8 divisors (see below), whose sum is σ = 35236415088. Its totient is φ = 28764418560.

The previous prime is 31970453747. The next prime is 31970453863. The reversal of 31970453779 is 97735407913.

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 31970453779 - 2⁵ = 31970453747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31970453719) 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, 14980402 + ... + 14982535.

It is an arithmetic number, because the mean of its divisors is an integer number (4404551886).

Almost surely, 2^31970453779 is an apocalyptic number.

31970453779 is a deficient number, since it is larger than the sum of its proper divisors (3265961309).

31970453779 is a wasteful number, since it uses less digits than its factorization.

31970453779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29963045.

The product of its (nonzero) digits is 5000940, while the sum is 55.

The spelling of 31970453779 in words is "thirty-one billion, nine hundred seventy million, four hundred fifty-three thousand, seven hundred seventy-nine".