31200104393 has 2 divisors, whose sum is σ = 31200104394. Its totient is φ = 31200104392.

The previous prime is 31200104359. The next prime is 31200104399. The reversal of 31200104393 is 39340100213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29844981049 + 1355123344 = 172757^2 + 36812^2 .

It is a cyclic number.

It is not a de Polignac number, because 31200104393 - 2¹² = 31200100297 is a prime.

It is not a weakly prime, because it can be changed into another prime (31200104399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600052196 + 15600052197.

It is an arithmetic number, because the mean of its divisors is an integer number (15600052197).

Almost surely, 2^31200104393 is an apocalyptic number.

It is an amenable number.

31200104393 is a deficient number, since it is larger than the sum of its proper divisors (1).

31200104393 is an equidigital number, since it uses as much as digits as its factorization.

31200104393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 31200104393 in words is "thirty-one billion, two hundred million, one hundred four thousand, three hundred ninety-three".