13423431252340 has 48 divisors (see below), whose sum is σ = 28745607058560. Its totient is φ = 5263564325760.

The previous prime is 13423431252331. The next prime is 13423431252347. The reversal of 13423431252340 is 4325213432431.

It is a self number, because there is not a number n which added to its sum of digits gives 13423431252340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423431252347) 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, 4165920 + ... + 6648439.

It is an arithmetic number, because the mean of its divisors is an integer number (598866813720).

Almost surely, 2^{13423431252340} is an apocalyptic number.

13423431252340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13423431252340 is an abundant number, since it is smaller than the sum of its proper divisors (15322175806220).

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

13423431252340 is a wasteful number, since it uses less digits than its factorization.

13423431252340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10815592 (or 10815590 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 13423431252340 its reverse (4325213432431), we get a palindrome (17748644684771).

The spelling of 13423431252340 in words is "thirteen trillion, four hundred twenty-three billion, four hundred thirty-one million, two hundred fifty-two thousand, three hundred forty".