31330022131 has 8 divisors (see below), whose sum is σ = 31509268128. Its totient is φ = 31151280000.

The previous prime is 31330022099. The next prime is 31330022149. The reversal of 31330022131 is 13122003313.

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 31330022131 - 2⁵ = 31330022099 is a prime.

It is a super-2 number, since 2×31330022131² (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 = 31330022099 and 31330022108.

It is not an unprimeable number, because it can be changed into a prime (31330025131) 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, 900 + ... + 250321.

It is an arithmetic number, because the mean of its divisors is an integer number (3938658516).

Almost surely, 2^31330022131 is an apocalyptic number.

31330022131 is a deficient number, since it is larger than the sum of its proper divisors (179245997).

31330022131 is a wasteful number, since it uses less digits than its factorization.

31330022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251933.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31330022131 its reverse (13122003313), we get a palindrome (44452025444).

The spelling of 31330022131 in words is "thirty-one billion, three hundred thirty million, twenty-two thousand, one hundred thirty-one".