243130003400 has 24 divisors (see below), whose sum is σ = 565277258370. Its totient is φ = 97252001280.

The previous prime is 243130003381. The next prime is 243130003433. The reversal of 243130003400 is 4300031342.

It can be written as a sum of positive squares in 3 ways, for example, as 196048815076 + 47081188324 = 442774^2 + 216982^2 .

It is a super-2 number, since 2×243130003400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607824809 + ... + 607825208.

Almost surely, 2^243130003400 is an apocalyptic number.

243130003400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243130003400 is an abundant number, since it is smaller than the sum of its proper divisors (322147254970).

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

243130003400 is a wasteful number, since it uses less digits than its factorization.

243130003400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215650033 (or 1215650024 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 243130003400 its reverse (4300031342), we get a palindrome (247430034742).

The spelling of 243130003400 in words is "two hundred forty-three billion, one hundred thirty million, three thousand, four hundred".