243034134131 has 4 divisors (see below), whose sum is σ = 243044340000. Its totient is φ = 243023928264.

The previous prime is 243034134121. The next prime is 243034134139. The reversal of 243034134131 is 131431430342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243034134131 - 2¹⁴ = 243034117747 is a prime.

It is a super-2 number, since 2×243034134131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243034134094 and 243034134103.

It is not an unprimeable number, because it can be changed into a prime (243034134139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5067131 + ... + 5114868.

It is an arithmetic number, because the mean of its divisors is an integer number (60761085000).

Almost surely, 2^243034134131 is an apocalyptic number.

243034134131 is a deficient number, since it is larger than the sum of its proper divisors (10205869).

243034134131 is a wasteful number, since it uses less digits than its factorization.

243034134131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10205868.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 243034134131 its reverse (131431430342), we get a palindrome (374465564473).

The spelling of 243034134131 in words is "two hundred forty-three billion, thirty-four million, one hundred thirty-four thousand, one hundred thirty-one".