31112203819 has 2 divisors, whose sum is σ = 31112203820. Its totient is φ = 31112203818.

The previous prime is 31112203783. The next prime is 31112203823. The reversal of 31112203819 is 91830221113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31112203819 - 2²¹ = 31110106667 is a prime.

It is a super-2 number, since 2×31112203819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31112203019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556101909 + 15556101910.

It is an arithmetic number, because the mean of its divisors is an integer number (15556101910).

Almost surely, 2^31112203819 is an apocalyptic number.

31112203819 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112203819 is an equidigital number, since it uses as much as digits as its factorization.

31112203819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 31112203819 in words is "thirty-one billion, one hundred twelve million, two hundred three thousand, eight hundred nineteen".