31303201232011 has 4 divisors (see below), whose sum is σ = 31625914646872. Its totient is φ = 30980487817152.

The previous prime is 31303201231999. The next prime is 31303201232033. The reversal of 31303201232011 is 11023210230313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31303201232011 - 2⁴¹ = 29104177976459 is a prime.

It is a super-2 number, since 2×31303201232011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31303201230011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161356707285 + ... + 161356707478.

It is an arithmetic number, because the mean of its divisors is an integer number (7906478661718).

Almost surely, 2^{31303201232011} is an apocalyptic number.

31303201232011 is a deficient number, since it is larger than the sum of its proper divisors (322713414861).

31303201232011 is an equidigital number, since it uses as much as digits as its factorization.

31303201232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322713414860.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31303201232011 its reverse (11023210230313), we get a palindrome (42326411462324).

The spelling of 31303201232011 in words is "thirty-one trillion, three hundred three billion, two hundred one million, two hundred thirty-two thousand, eleven".