2340043061531 has 4 divisors (see below), whose sum is σ = 2674334927472. Its totient is φ = 2005751195592.

The previous prime is 2340043061507. The next prime is 2340043061557. The reversal of 2340043061531 is 1351603400432.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2340043061531 is a prime.

It is a super-2 number, since 2×2340043061531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2340043061431) 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, 167145932960 + ... + 167145932973.

It is an arithmetic number, because the mean of its divisors is an integer number (668583731868).

Almost surely, 2^{2340043061531} is an apocalyptic number.

2340043061531 is a deficient number, since it is larger than the sum of its proper divisors (334291865941).

2340043061531 is an equidigital number, since it uses as much as digits as its factorization.

2340043061531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334291865940.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 2340043061531 its reverse (1351603400432), we get a palindrome (3691646461963).

The spelling of 2340043061531 in words is "two trillion, three hundred forty billion, forty-three million, sixty-one thousand, five hundred thirty-one".