31361645364065 has 8 divisors (see below), whose sum is σ = 37640921852520. Its totient is φ = 25084684680832.

The previous prime is 31361645364059. The next prime is 31361645364067. The reversal of 31361645364065 is 56046354616313.

It can be written as a sum of positive squares in 4 ways, for example, as 1609551479761 + 29752093884304 = 1268681^2 + 5454548^2 .

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 31361645364065 - 2²⁶ = 31361578255201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31361645363998 and 31361645364016.

It is not an unprimeable number, because it can be changed into a prime (31361645364067) 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, 578921510 + ... + 578975679.

It is an arithmetic number, because the mean of its divisors is an integer number (4705115231565).

Almost surely, 2^{31361645364065} is an apocalyptic number.

It is an amenable number.

31361645364065 is a deficient number, since it is larger than the sum of its proper divisors (6279276488455).

31361645364065 is a wasteful number, since it uses less digits than its factorization.

31361645364065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157902611.

The product of its (nonzero) digits is 13996800, while the sum is 53.

The spelling of 31361645364065 in words is "thirty-one trillion, three hundred sixty-one billion, six hundred forty-five million, three hundred sixty-four thousand, sixty-five".