31023321020231 has 8 divisors (see below), whose sum is σ = 32080437848304. Its totient is φ = 29983677197760.

The previous prime is 31023321020129. The next prime is 31023321020243. The reversal of 31023321020231 is 13202012332013.

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 31023321020231 - 2³⁸ = 30748443113287 is a prime.

It is a super-2 number, since 2×31023321020231² (a number of 28 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 = 31023321020197 and 31023321020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023321029231) 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, 4368247790 + ... + 4368254891.

It is an arithmetic number, because the mean of its divisors is an integer number (4010054731038).

Almost surely, 2^{31023321020231} is an apocalyptic number.

31023321020231 is a deficient number, since it is larger than the sum of its proper divisors (1057116828073).

31023321020231 is an equidigital number, since it uses as much as digits as its factorization.

31023321020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8736502801.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31023321020231 its reverse (13202012332013), we get a palindrome (44225333352244).

The spelling of 31023321020231 in words is "thirty-one trillion, twenty-three billion, three hundred twenty-one million, twenty thousand, two hundred thirty-one".