31032130310321 has 16 divisors (see below), whose sum is σ = 36354698526720. Its totient is φ = 25932785195520.

The previous prime is 31032130310299. The next prime is 31032130310369. The reversal of 31032130310321 is 12301303123013.

It is not a de Polignac number, because 31032130310321 - 2⁶ = 31032130310257 is a prime.

It is a super-2 number, since 2×31032130310321² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31032130312321) 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, 35880881 + ... + 36735566.

It is an arithmetic number, because the mean of its divisors is an integer number (2272168657920).

Almost surely, 2^{31032130310321} is an apocalyptic number.

It is an amenable number.

31032130310321 is a deficient number, since it is larger than the sum of its proper divisors (5322568216399).

31032130310321 is a wasteful number, since it uses less digits than its factorization.

31032130310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72617984.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31032130310321 its reverse (12301303123013), we get a palindrome (43333433433334).

The spelling of 31032130310321 in words is "thirty-one trillion, thirty-two billion, one hundred thirty million, three hundred ten thousand, three hundred twenty-one".