31203123322011 has 32 divisors (see below), whose sum is σ = 42972365547072. Its totient is φ = 20128815083520.

The previous prime is 31203123322009. The next prime is 31203123322027. The reversal of 31203123322011 is 11022332130213.

It is not a de Polignac number, because 31203123322011 - 2¹ = 31203123322009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31203123322711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222935331 + ... + 223075251.

It is an arithmetic number, because the mean of its divisors is an integer number (1342886423346).

Almost surely, 2^{31203123322011} is an apocalyptic number.

31203123322011 is a deficient number, since it is larger than the sum of its proper divisors (11769242225061).

31203123322011 is a wasteful number, since it uses less digits than its factorization.

31203123322011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159263.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31203123322011 its reverse (11022332130213), we get a palindrome (42225455452224).

The spelling of 31203123322011 in words is "thirty-one trillion, two hundred three billion, one hundred twenty-three million, three hundred twenty-two thousand, eleven".