31400064543 has 4 divisors (see below), whose sum is σ = 41866752728. Its totient is φ = 20933376360.

The previous prime is 31400064511. The next prime is 31400064551. The reversal of 31400064543 is 34546000413.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31400064543 - 2⁵ = 31400064511 is a prime.

It is a super-3 number, since 3×31400064543³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31400064543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400064593) 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, 5233344088 + ... + 5233344093.

It is an arithmetic number, because the mean of its divisors is an integer number (10466688182).

Almost surely, 2^31400064543 is an apocalyptic number.

31400064543 is a deficient number, since it is larger than the sum of its proper divisors (10466688185).

31400064543 is a wasteful number, since it uses less digits than its factorization.

31400064543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10466688184.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 31400064543 its reverse (34546000413), we get a palindrome (65946064956).

The spelling of 31400064543 in words is "thirty-one billion, four hundred million, sixty-four thousand, five hundred forty-three".