31223214411131 has 16 divisors (see below), whose sum is σ = 33364084517280. Its totient is φ = 29116160156160.

The previous prime is 31223214411127. The next prime is 31223214411139. The reversal of 31223214411131 is 13111441232213.

It is a cyclic number.

It is not a de Polignac number, because 31223214411131 - 2² = 31223214411127 is a prime.

It is a super-2 number, since 2×31223214411131² (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 = 31223214411094 and 31223214411103.

It is not an unprimeable number, because it can be changed into a prime (31223214411139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74349776 + ... + 74768546.

It is an arithmetic number, because the mean of its divisors is an integer number (2085255282330).

Almost surely, 2^{31223214411131} is an apocalyptic number.

31223214411131 is a deficient number, since it is larger than the sum of its proper divisors (2140870106149).

31223214411131 is a wasteful number, since it uses less digits than its factorization.

31223214411131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459134.

The product of its digits is 3456, while the sum is 29.

Adding to 31223214411131 its reverse (13111441232213), we get a palindrome (44334655643344).

The spelling of 31223214411131 in words is "thirty-one trillion, two hundred twenty-three billion, two hundred fourteen million, four hundred eleven thousand, one hundred thirty-one".