31240000430 has 16 divisors (see below), whose sum is σ = 57603513744. Its totient is φ = 12191219520.

The previous prime is 31240000387. The next prime is 31240000433. The reversal of 31240000430 is 3400004213.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31240000399 and 31240000408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240000433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38097152 + ... + 38097971.

It is an arithmetic number, because the mean of its divisors is an integer number (3600219609).

Almost surely, 2^31240000430 is an apocalyptic number.

31240000430 is a deficient number, since it is larger than the sum of its proper divisors (26363513314).

31240000430 is a wasteful number, since it uses less digits than its factorization.

31240000430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76195171.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 31240000430 its reverse (3400004213), we get a palindrome (34640004643).

The spelling of 31240000430 in words is "thirty-one billion, two hundred forty million, four hundred thirty", and thus it is an aban number.