31745774677 has 4 divisors (see below), whose sum is σ = 32192898336. Its totient is φ = 31298651020.

The previous prime is 31745774659. The next prime is 31745774689. The reversal of 31745774677 is 77647754713.

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 31745774677 - 2¹⁹ = 31745250389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31745774477) 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, 223561723 + ... + 223561864.

It is an arithmetic number, because the mean of its divisors is an integer number (8048224584).

Almost surely, 2^31745774677 is an apocalyptic number.

It is an amenable number.

31745774677 is a deficient number, since it is larger than the sum of its proper divisors (447123659).

31745774677 is an equidigital number, since it uses as much as digits as its factorization.

31745774677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447123658.

The product of its digits is 24202080, while the sum is 58.

The spelling of 31745774677 in words is "thirty-one billion, seven hundred forty-five million, seven hundred seventy-four thousand, six hundred seventy-seven".