31440230343 has 12 divisors (see below), whose sum is σ = 45437505048. Its totient is φ = 20949150960.

The previous prime is 31440230299. The next prime is 31440230383. The reversal of 31440230343 is 34303204413.

31440230343 is a `hidden beast` number, since 314 + 4 + 0 + 2 + 3 + 0 + 343 = 666.

It is not a de Polignac number, because 31440230343 - 2¹⁰ = 31440229319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31440230383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 898768 + ... + 933093.

It is an arithmetic number, because the mean of its divisors is an integer number (3786458754).

Almost surely, 2^31440230343 is an apocalyptic number.

31440230343 is a deficient number, since it is larger than the sum of its proper divisors (13997274705).

31440230343 is a wasteful number, since it uses less digits than its factorization.

31440230343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833774 (or 1833771 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 31440230343 its reverse (34303204413), we get a palindrome (65743434756).

The spelling of 31440230343 in words is "thirty-one billion, four hundred forty million, two hundred thirty thousand, three hundred forty-three".