31331045345245 has 8 divisors (see below), whose sum is σ = 37605852029016. Its totient is φ = 25059104533056.

The previous prime is 31331045345233. The next prime is 31331045345293. The reversal of 31331045345245 is 54254354013313.

It can be written as a sum of positive squares in 4 ways, for example, as 10534919028516 + 20796126316729 = 3245754^2 + 4560277^2 .

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 31331045345245 - 2²¹ = 31331043248093 is a prime.

It is a super-2 number, since 2×31331045345245² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716443842 + ... + 716487571.

It is an arithmetic number, because the mean of its divisors is an integer number (4700731503627).

Almost surely, 2^{31331045345245} is an apocalyptic number.

It is an amenable number.

31331045345245 is a deficient number, since it is larger than the sum of its proper divisors (6274806683771).

31331045345245 is a wasteful number, since it uses less digits than its factorization.

31331045345245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432935791.

The product of its (nonzero) digits is 1296000, while the sum is 43.

Adding to 31331045345245 its reverse (54254354013313), we get a palindrome (85585399358558).

The spelling of 31331045345245 in words is "thirty-one trillion, three hundred thirty-one billion, forty-five million, three hundred forty-five thousand, two hundred forty-five".