31010131223 has 2 divisors, whose sum is σ = 31010131224. Its totient is φ = 31010131222.

The previous prime is 31010131199. The next prime is 31010131241. The reversal of 31010131223 is 32213101013.

It is a strong prime.

It is an emirp because it is prime and its reverse (32213101013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31010131223 - 2²² = 31005936919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31010134223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15505065611 + 15505065612.

It is an arithmetic number, because the mean of its divisors is an integer number (15505065612).

Almost surely, 2^31010131223 is an apocalyptic number.

31010131223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31010131223 is an equidigital number, since it uses as much as digits as its factorization.

31010131223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31010131223 its reverse (32213101013), we get a palindrome (63223232236).

The spelling of 31010131223 in words is "thirty-one billion, ten million, one hundred thirty-one thousand, two hundred twenty-three".