31222343131 has 16 divisors (see below), whose sum is σ = 36593187840. Its totient is φ = 26083854720.

The previous prime is 31222343101. The next prime is 31222343153. The reversal of 31222343131 is 13134322213.

It is not a de Polignac number, because 31222343131 - 2⁵ = 31222343099 is a prime.

It is a super-2 number, since 2×31222343131² (a number of 22 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 = 31222343096 and 31222343105.

It is not an unprimeable number, because it can be changed into a prime (31222343101) 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, 117601 + ... + 276178.

It is an arithmetic number, because the mean of its divisors is an integer number (2287074240).

Almost surely, 2^31222343131 is an apocalyptic number.

31222343131 is a deficient number, since it is larger than the sum of its proper divisors (5370844709).

31222343131 is a wasteful number, since it uses less digits than its factorization.

31222343131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394074.

The product of its digits is 2592, while the sum is 25.

Adding to 31222343131 its reverse (13134322213), we get a palindrome (44356665344).

The spelling of 31222343131 in words is "thirty-one billion, two hundred twenty-two million, three hundred forty-three thousand, one hundred thirty-one".