31322121013 has 8 divisors (see below), whose sum is σ = 31943260800. Its totient is φ = 30703989888.

The previous prime is 31322121001. The next prime is 31322121043. The reversal of 31322121013 is 31012122313.

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 31322121013 - 2¹³ = 31322112821 is a prime.

It is a super-2 number, since 2×31322121013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31322121043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731133 + ... + 772786.

It is an arithmetic number, because the mean of its divisors is an integer number (3992907600).

Almost surely, 2^31322121013 is an apocalyptic number.

It is an amenable number.

31322121013 is a deficient number, since it is larger than the sum of its proper divisors (621139787).

31322121013 is a wasteful number, since it uses less digits than its factorization.

31322121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504331.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31322121013 its reverse (31012122313), we get a palindrome (62334243326).

The spelling of 31322121013 in words is "thirty-one billion, three hundred twenty-two million, one hundred twenty-one thousand, thirteen".