743145405131 has 4 divisors (see below), whose sum is σ = 743147410632. Its totient is φ = 743143399632.

The previous prime is 743145405109. The next prime is 743145405133. The reversal of 743145405131 is 131504541347.

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-743145405131 is a prime.

It is a super-2 number, since 2×743145405131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (743145405133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266945 + ... + 1248018.

It is an arithmetic number, because the mean of its divisors is an integer number (185786852658).

Almost surely, 2^743145405131 is an apocalyptic number.

743145405131 is a deficient number, since it is larger than the sum of its proper divisors (2005501).

743145405131 is a wasteful number, since it uses less digits than its factorization.

743145405131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005500.

The product of its (nonzero) digits is 100800, while the sum is 38.

Adding to 743145405131 its reverse (131504541347), we get a palindrome (874649946478).

The spelling of 743145405131 in words is "seven hundred forty-three billion, one hundred forty-five million, four hundred five thousand, one hundred thirty-one".