15231143400 has 384 divisors, whose sum is σ = 52900007040. Its totient is φ = 3594240000.

The previous prime is 15231143399. The next prime is 15231143429. The reversal of 15231143400 is 434113251.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48661644 + ... + 48661956.

It is an arithmetic number, because the mean of its divisors is an integer number (137760435).

Almost surely, 2^15231143400 is an apocalyptic number.

15231143400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15231143400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26450003520).

15231143400 is an abundant number, since it is smaller than the sum of its proper divisors (37668863640).

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

15231143400 is a wasteful number, since it uses less digits than its factorization.

15231143400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 15231143400 its reverse (434113251), we get a palindrome (15665256651).

The spelling of 15231143400 in words is "fifteen billion, two hundred thirty-one million, one hundred forty-three thousand, four hundred".