31005140000 has 60 divisors (see below), whose sum is σ = 76277344374. Its totient is φ = 12402048000.

The previous prime is 31005139999. The next prime is 31005140077. The reversal of 31005140000 is 4150013.

It can be written as a sum of positive squares in 5 ways, for example, as 855679504 + 30149460496 = 29252^2 + 173636^2 .

It is a super-2 number, since 2×31005140000² (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 (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 755129 + ... + 795128.

Almost surely, 2^31005140000 is an apocalyptic number.

It is an amenable number.

31005140000 is an abundant number, since it is smaller than the sum of its proper divisors (45272204374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31005140000 is an equidigital number, since it uses as much as digits as its factorization.

31005140000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550287 (or 1550264 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

Adding to 31005140000 its reverse (4150013), we get a palindrome (31009290013).

The spelling of 31005140000 in words is "thirty-one billion, five million, one hundred forty thousand".