31241354040013 has 6 divisors (see below), whose sum is σ = 33829395203274. Its totient is φ = 28838172959856.

The previous prime is 31241354040011. The next prime is 31241354040041. The reversal of 31241354040013 is 31004045314213.

It can be written as a sum of positive squares in 3 ways, for example, as 2619260638569 + 28622093401444 = 1618413^2 + 5349962^2 .

It is not a de Polignac number, because 31241354040013 - 2¹ = 31241354040011 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 (31241354040011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92430041370 + ... + 92430041707.

It is an arithmetic number, because the mean of its divisors is an integer number (5638232533879).

Almost surely, 2^{31241354040013} is an apocalyptic number.

It is an amenable number.

31241354040013 is a deficient number, since it is larger than the sum of its proper divisors (2588041163261).

31241354040013 is a wasteful number, since it uses less digits than its factorization.

31241354040013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184860083103 (or 184860083090 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 31241354040013 its reverse (31004045314213), we get a palindrome (62245399354226).

The spelling of 31241354040013 in words is "thirty-one trillion, two hundred forty-one billion, three hundred fifty-four million, forty thousand, thirteen".