31343031530 has 32 divisors (see below), whose sum is σ = 57757005504. Its totient is φ = 12239813376.

The previous prime is 31343031527. The next prime is 31343031571. The reversal of 31343031530 is 3513034313.

It is a self number, because there is not a number n which added to its sum of digits gives 31343031530.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 948242 + ... + 980738.

It is an arithmetic number, because the mean of its divisors is an integer number (1804906422).

Almost surely, 2^31343031530 is an apocalyptic number.

31343031530 is a deficient number, since it is larger than the sum of its proper divisors (26413973974).

31343031530 is a wasteful number, since it uses less digits than its factorization.

31343031530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34790.

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 31343031530 its reverse (3513034313), we get a palindrome (34856065843).

The spelling of 31343031530 in words is "thirty-one billion, three hundred forty-three million, thirty-one thousand, five hundred thirty".