31553312708 has 6 divisors (see below), whose sum is σ = 55218297246. Its totient is φ = 15776656352.

The previous prime is 31553312671. The next prime is 31553312717. The reversal of 31553312708 is 80721335513.

It can be written as a sum of positive squares in only one way, i.e., 28176308164 + 3377004544 = 167858^2 + 58112^2 .

It is a super-2 number, since 2×31553312708² (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 as a sum of consecutive naturals, namely, 3944164085 + ... + 3944164092.

It is an arithmetic number, because the mean of its divisors is an integer number (9203049541).

Almost surely, 2^31553312708 is an apocalyptic number.

It is an amenable number.

31553312708 is a deficient number, since it is larger than the sum of its proper divisors (23664984538).

31553312708 is a wasteful number, since it uses less digits than its factorization.

31553312708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888328181 (or 7888328179 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 31553312708 in words is "thirty-one billion, five hundred fifty-three million, three hundred twelve thousand, seven hundred eight".