31354222131 has 12 divisors (see below), whose sum is σ = 45292556608. Its totient is φ = 20901372624.

The previous prime is 31354222093. The next prime is 31354222169. The reversal of 31354222131 is 13122245313.

It is an interprime number because it is at equal distance from previous prime (31354222093) and next prime (31354222169).

It is not a de Polignac number, because 31354222131 - 2¹¹ = 31354220083 is a prime.

It is a super-2 number, since 2×31354222131² (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 = 31354222095 and 31354222104.

It is not an unprimeable number, because it can be changed into a prime (31354222181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27006 + ... + 251868.

Almost surely, 2^31354222131 is an apocalyptic number.

31354222131 is a deficient number, since it is larger than the sum of its proper divisors (13938334477).

31354222131 is a wasteful number, since it uses less digits than its factorization.

31354222131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240362 (or 240359 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

Adding to 31354222131 its reverse (13122245313), we get a palindrome (44476467444).

The spelling of 31354222131 in words is "thirty-one billion, three hundred fifty-four million, two hundred twenty-two thousand, one hundred thirty-one".