31303043140 has 12 divisors (see below), whose sum is σ = 65736390636. Its totient is φ = 12521217248.

The previous prime is 31303043117. The next prime is 31303043147. The reversal of 31303043140 is 4134030313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15025366084 + 16277677056 = 122578^2 + 127584^2 .

It is a super-3 number, since 3×31303043140³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31303043147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782576059 + ... + 782576098.

It is an arithmetic number, because the mean of its divisors is an integer number (5478032553).

Almost surely, 2^31303043140 is an apocalyptic number.

It is an amenable number.

31303043140 is an abundant number, since it is smaller than the sum of its proper divisors (34433347496).

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

31303043140 is a wasteful number, since it uses less digits than its factorization.

31303043140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565152166 (or 1565152164 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31303043140 its reverse (4134030313), we get a palindrome (35437073453).

The spelling of 31303043140 in words is "thirty-one billion, three hundred three million, forty-three thousand, one hundred forty".