31358678413924 has 9 divisors (see below), whose sum is σ = 54877706823961. Its totient is φ = 15679333607080.

The previous prime is 31358678413871. The next prime is 31358678413957. The reversal of 31358678413924 is 42931487685313.

The square root of 31358678413924 is 5599882.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12394046988324 + 18964631425600 = 3520518^2 + 4354840^2 .

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 9799794 + ... + 12599734.

Almost surely, 2^{31358678413924} is an apocalyptic number.

31358678413924 is the 5599882-nd square number.

It is an amenable number.

31358678413924 is a deficient number, since it is larger than the sum of its proper divisors (23519028410037).

31358678413924 is an frugal number, since it uses more digits than its factorization.

31358678413924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599886 (or 2799943 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 64.

The spelling of 31358678413924 in words is "thirty-one trillion, three hundred fifty-eight billion, six hundred seventy-eight million, four hundred thirteen thousand, nine hundred twenty-four".