31340403431131 has 8 divisors (see below), whose sum is σ = 31769893680624. Its totient is φ = 30910917767040.

The previous prime is 31340403431083. The next prime is 31340403431251. The reversal of 31340403431131 is 13113430404313.

It is a happy number.

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 31340403431131 - 2²¹ = 31340401333979 is a prime.

It is a super-2 number, since 2×31340403431131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31340403431093 and 31340403431102.

It is not an unprimeable number, because it can be changed into a prime (31340403461131) 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, 13974180 + ... + 16061086.

It is an arithmetic number, because the mean of its divisors is an integer number (3971236710078).

Almost surely, 2^{31340403431131} is an apocalyptic number.

31340403431131 is a deficient number, since it is larger than the sum of its proper divisors (429490249493).

31340403431131 is a wasteful number, since it uses less digits than its factorization.

31340403431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292701.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 31340403431131 its reverse (13113430404313), we get a palindrome (44453833835444).

The spelling of 31340403431131 in words is "thirty-one trillion, three hundred forty billion, four hundred three million, four hundred thirty-one thousand, one hundred thirty-one".