1243340200131 has 8 divisors (see below), whose sum is σ = 1657796734800. Its totient is φ = 828888566112.

The previous prime is 1243340200057. The next prime is 1243340200153. The reversal of 1243340200131 is 1310020433421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1243340200131 is a prime.

It is a super-2 number, since 2×1243340200131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243340200181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585456 + ... + 1682093.

It is an arithmetic number, because the mean of its divisors is an integer number (207224591850).

Almost surely, 2^{1243340200131} is an apocalyptic number.

1243340200131 is a deficient number, since it is larger than the sum of its proper divisors (414456534669).

1243340200131 is a wasteful number, since it uses less digits than its factorization.

1243340200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450325.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1243340200131 its reverse (1310020433421), we get a palindrome (2553360633552).

The spelling of 1243340200131 in words is "one trillion, two hundred forty-three billion, three hundred forty million, two hundred thousand, one hundred thirty-one".