20123440131310 has 16 divisors (see below), whose sum is σ = 38352909427056. Its totient is φ = 7575883343488.

The previous prime is 20123440131269. The next prime is 20123440131313. The reversal of 20123440131310 is 1313104432102.

It is a super-2 number, since 2×20123440131310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123440131313) 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, 59186588452 + ... + 59186588791.

It is an arithmetic number, because the mean of its divisors is an integer number (2397056839191).

Almost surely, 2^{20123440131310} is an apocalyptic number.

20123440131310 is a deficient number, since it is larger than the sum of its proper divisors (18229469295746).

20123440131310 is a wasteful number, since it uses less digits than its factorization.

20123440131310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118373177267.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20123440131310 its reverse (1313104432102), we get a palindrome (21436544563412).

The spelling of 20123440131310 in words is "twenty trillion, one hundred twenty-three billion, four hundred forty million, one hundred thirty-one thousand, three hundred ten".