31430235343 has 4 divisors (see below), whose sum is σ = 33847945768. Its totient is φ = 29012524920.

The previous prime is 31430235323. The next prime is 31430235367. The reversal of 31430235343 is 34353203413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34353203413 = 1321 ⋅26005453.

It is a cyclic number.

It is not a de Polignac number, because 31430235343 - 2²¹ = 31428138191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430235323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208855193 + ... + 1208855218.

It is an arithmetic number, because the mean of its divisors is an integer number (8461986442).

Almost surely, 2^31430235343 is an apocalyptic number.

31430235343 is a deficient number, since it is larger than the sum of its proper divisors (2417710425).

31430235343 is a wasteful number, since it uses less digits than its factorization.

31430235343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417710424.

The product of its (nonzero) digits is 38880, while the sum is 31.

Adding to 31430235343 its reverse (34353203413), we get a palindrome (65783438756).

The spelling of 31430235343 in words is "thirty-one billion, four hundred thirty million, two hundred thirty-five thousand, three hundred forty-three".