13131523403450 has 48 divisors (see below), whose sum is σ = 25518960342720. Its totient is φ = 5017850661120.

The previous prime is 13131523403441. The next prime is 13131523403459. The reversal of 13131523403450 is 5430432513131.

It is an interprime number because it is at equal distance from previous prime (13131523403441) and next prime (13131523403459).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13131523403450.

It is not an unprimeable number, because it can be changed into a prime (13131523403459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6349535 + ... + 8159634.

It is an arithmetic number, because the mean of its divisors is an integer number (531645007140).

Almost surely, 2^{13131523403450} is an apocalyptic number.

13131523403450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13131523403450 is a deficient number, since it is larger than the sum of its proper divisors (12387436939270).

13131523403450 is a wasteful number, since it uses less digits than its factorization.

13131523403450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14509991 (or 14509986 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 13131523403450 its reverse (5430432513131), we get a palindrome (18561955916581).

The spelling of 13131523403450 in words is "thirteen trillion, one hundred thirty-one billion, five hundred twenty-three million, four hundred three thousand, four hundred fifty".