31430340351 has 12 divisors (see below), whose sum is σ = 47373266928. Its totient is φ = 20042535744.

The previous prime is 31430340329. The next prime is 31430340353. The reversal of 31430340351 is 15304303413.

31430340351 is a `hidden beast` number, since 3 + 1 + 4 + 303 + 4 + 0 + 351 = 666.

It is not a de Polignac number, because 31430340351 - 2²¹ = 31428243199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430340353) 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 11 ways as a sum of consecutive naturals, for example, 75918490 + ... + 75918903.

It is an arithmetic number, because the mean of its divisors is an integer number (3947772244).

Almost surely, 2^31430340351 is an apocalyptic number.

31430340351 is a deficient number, since it is larger than the sum of its proper divisors (15942926577).

31430340351 is a wasteful number, since it uses less digits than its factorization.

31430340351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151837422 (or 151837419 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 31430340351 its reverse (15304303413), we get a palindrome (46734643764).

The spelling of 31430340351 in words is "thirty-one billion, four hundred thirty million, three hundred forty thousand, three hundred fifty-one".