31078718379241 has 9 divisors (see below), whose sum is σ = 33653365242309. Its totient is φ = 28687980836736.

The previous prime is 31078718379239. The next prime is 31078718379299. The reversal of 31078718379241 is 14297381787013.

It is a happy number.

The square root of 31078718379241 is 5574829.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3316146618841 + 27762571760400 = 1821029^2 + 5269020^2 .

It is not a de Polignac number, because 31078718379241 - 2¹ = 31078718379239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31078718379241.

It is not an unprimeable number, because it can be changed into a prime (31078718379941) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 72258361 + ... + 72687193.

It is an arithmetic number, because the mean of its divisors is an integer number (3739262804701).

Almost surely, 2^{31078718379241} is an apocalyptic number.

31078718379241 is the 5574829-th square number.

31078718379241 is the 2787415-th centered octagonal number.

It is an amenable number.

31078718379241 is a deficient number, since it is larger than the sum of its proper divisors (2574646863068).

31078718379241 is an frugal number, since it uses more digits than its factorization.

31078718379241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857692 (or 428846 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 61.

The spelling of 31078718379241 in words is "thirty-one trillion, seventy-eight billion, seven hundred eighteen million, three hundred seventy-nine thousand, two hundred forty-one".