31122322021131 has 32 divisors (see below), whose sum is σ = 46037826109440. Its totient is φ = 18541623117600.

The previous prime is 31122322021103. The next prime is 31122322021151. The reversal of 31122322021131 is 13112022322113.

It is not a de Polignac number, because 31122322021131 - 2¹³ = 31122322012939 is a prime.

It is a super-2 number, since 2×31122322021131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31122322021151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54197286 + ... + 54768516.

It is an arithmetic number, because the mean of its divisors is an integer number (1438682065920).

Almost surely, 2^{31122322021131} is an apocalyptic number.

31122322021131 is a deficient number, since it is larger than the sum of its proper divisors (14915504088309).

31122322021131 is a wasteful number, since it uses less digits than its factorization.

31122322021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599287.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 31122322021131 its reverse (13112022322113), we get a palindrome (44234344343244).

The spelling of 31122322021131 in words is "thirty-one trillion, one hundred twenty-two billion, three hundred twenty-two million, twenty-one thousand, one hundred thirty-one".