31343212727 has 4 divisors (see below), whose sum is σ = 31720841880. Its totient is φ = 30965583576.

The previous prime is 31343212711. The next prime is 31343212741. The reversal of 31343212727 is 72721234313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31343212727 - 2⁴ = 31343212711 is a prime.

It is a super-4 number, since 4×31343212727⁴ (a number of 43 digits) contains 4444 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 (31343512727) 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, 188814452 + ... + 188814617.

It is an arithmetic number, because the mean of its divisors is an integer number (7930210470).

Almost surely, 2^31343212727 is an apocalyptic number.

31343212727 is a deficient number, since it is larger than the sum of its proper divisors (377629153).

31343212727 is an equidigital number, since it uses as much as digits as its factorization.

31343212727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377629152.

The product of its digits is 42336, while the sum is 35.

The spelling of 31343212727 in words is "thirty-one billion, three hundred forty-three million, two hundred twelve thousand, seven hundred twenty-seven".