31000332130 has 32 divisors (see below), whose sum is σ = 57879716400. Its totient is φ = 11940402432.

The previous prime is 31000332107. The next prime is 31000332149. The reversal of 31000332130 is 3123300013.

It can be written as a sum of positive squares in 8 ways, for example, as 23261435289 + 7738896841 = 152517^2 + 87971^2 .

It is a super-2 number, since 2×31000332130² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35125 + ... + 251464.

Almost surely, 2^31000332130 is an apocalyptic number.

31000332130 is a deficient number, since it is larger than the sum of its proper divisors (26879384270).

31000332130 is a wasteful number, since it uses less digits than its factorization.

31000332130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286998.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31000332130 its reverse (3123300013), we get a palindrome (34123632143).

The spelling of 31000332130 in words is "thirty-one billion, three hundred thirty-two thousand, one hundred thirty".