15553231343 has 8 divisors (see below), whose sum is σ = 16753051728. Its totient is φ = 14353899264.

The previous prime is 15553231339. The next prime is 15553231357. The reversal of 15553231343 is 34313235551.

It is a happy number.

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 15553231343 - 2² = 15553231339 is a prime.

It is a super-3 number, since 3×15553231343³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15553231843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54530 + ... + 184607.

It is an arithmetic number, because the mean of its divisors is an integer number (2094131466).

Almost surely, 2^15553231343 is an apocalyptic number.

15553231343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15553231343 is a deficient number, since it is larger than the sum of its proper divisors (1199820385).

15553231343 is a wasteful number, since it uses less digits than its factorization.

15553231343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244153.

The product of its digits is 81000, while the sum is 35.

Adding to 15553231343 its reverse (34313235551), we get a palindrome (49866466894).

The spelling of 15553231343 in words is "fifteen billion, five hundred fifty-three million, two hundred thirty-one thousand, three hundred forty-three".