31123420421334 has 32 divisors (see below), whose sum is σ = 64255117639680. Its totient is φ = 10039763947200.

The previous prime is 31123420421329. The next prime is 31123420421383. The reversal of 31123420421334 is 43312402432113.

It is a super-2 number, since 2×31123420421334² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31123420421295 and 31123420421304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74823322 + ... + 75238130.

It is an arithmetic number, because the mean of its divisors is an integer number (2007972426240).

Almost surely, 2^{31123420421334} is an apocalyptic number.

31123420421334 is an abundant number, since it is smaller than the sum of its proper divisors (33131697218346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31123420421334 is a wasteful number, since it uses less digits than its factorization.

31123420421334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818236.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 31123420421334 its reverse (43312402432113), we get a palindrome (74435822853447).

The spelling of 31123420421334 in words is "thirty-one trillion, one hundred twenty-three billion, four hundred twenty million, four hundred twenty-one thousand, three hundred thirty-four".