31324141540 has 24 divisors (see below), whose sum is σ = 67558555512. Its totient is φ = 12191016960.

The previous prime is 31324141507. The next prime is 31324141543. The reversal of 31324141540 is 4514142313.

It can be written as a sum of positive squares in 4 ways, for example, as 2941326756 + 28382814784 = 54234^2 + 168472^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31324141499 and 31324141508.

It is not an unprimeable number, because it can be changed into a prime (31324141543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21164221 + ... + 21165700.

It is an arithmetic number, because the mean of its divisors is an integer number (2814939813).

Almost surely, 2^31324141540 is an apocalyptic number.

It is an amenable number.

31324141540 is an abundant number, since it is smaller than the sum of its proper divisors (36234413972).

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

31324141540 is a wasteful number, since it uses less digits than its factorization.

31324141540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42329967 (or 42329965 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 31324141540 its reverse (4514142313), we get a palindrome (35838283853).

The spelling of 31324141540 in words is "thirty-one billion, three hundred twenty-four million, one hundred forty-one thousand, five hundred forty".