31000313223 has 16 divisors (see below), whose sum is σ = 50101516800. Its totient is φ = 18788068440.

The previous prime is 31000313207. The next prime is 31000313243. The reversal of 31000313223 is 32231300013.

31000313223 is a `hidden beast` number, since 310 + 0 + 0 + 31 + 322 + 3 = 666.

It is not a de Polignac number, because 31000313223 - 2⁴ = 31000313207 is a prime.

It is a super-2 number, since 2×31000313223² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000313196 and 31000313205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000313203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52188783 + ... + 52189376.

It is an arithmetic number, because the mean of its divisors is an integer number (3131344800).

Almost surely, 2^31000313223 is an apocalyptic number.

31000313223 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31000313223 is a deficient number, since it is larger than the sum of its proper divisors (19101203577).

31000313223 is a wasteful number, since it uses less digits than its factorization.

31000313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104378179 (or 104378173 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31000313223 its reverse (32231300013), we get a palindrome (63231613236).

The spelling of 31000313223 in words is "thirty-one billion, three hundred thirteen thousand, two hundred twenty-three".