31037438321668 has 12 divisors (see below), whose sum is σ = 54349190674380. Its totient is φ = 15509098128992.

The previous prime is 31037438321647. The next prime is 31037438321713. The reversal of 31037438321668 is 86612383473013.

It can be written as a sum of positive squares in 2 ways, for example, as 7565041213444 + 23472397108224 = 2750462^2 + 4844832^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2405250703 + ... + 2405263606.

It is an arithmetic number, because the mean of its divisors is an integer number (4529099222865).

Almost surely, 2^{31037438321668} is an apocalyptic number.

It is an amenable number.

31037438321668 is a deficient number, since it is larger than the sum of its proper divisors (23311752352712).

31037438321668 is a wasteful number, since it uses less digits than its factorization.

31037438321668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810515926 (or 4810515924 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 55.

The spelling of 31037438321668 in words is "thirty-one trillion, thirty-seven billion, four hundred thirty-eight million, three hundred twenty-one thousand, six hundred sixty-eight".