440340431540131 has 4 divisors (see below), whose sum is σ = 443701808880264. Its totient is φ = 436979054200000.

The previous prime is 440340431540057. The next prime is 440340431540197. The reversal of 440340431540131 is 131045134043044.

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 440340431540131 - 2¹⁹ = 440340431015843 is a prime.

It is a super-2 number, since 2×440340431540131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440340431540531) 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, 1680688669870 + ... + 1680688670131.

It is an arithmetic number, because the mean of its divisors is an integer number (110925452220066).

Almost surely, 2^{440340431540131} is an apocalyptic number.

440340431540131 is a deficient number, since it is larger than the sum of its proper divisors (3361377340133).

440340431540131 is a wasteful number, since it uses less digits than its factorization.

440340431540131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361377340132.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 440340431540131 its reverse (131045134043044), we get a palindrome (571385565583175).

The spelling of 440340431540131 in words is "four hundred forty trillion, three hundred forty billion, four hundred thirty-one million, five hundred forty thousand, one hundred thirty-one".