31223130302111 has 12 divisors (see below), whose sum is σ = 35426724228672. Its totient is φ = 27469029588000.

The previous prime is 31223130302107. The next prime is 31223130302131. The reversal of 31223130302111 is 11120303132213.

It is not a de Polignac number, because 31223130302111 - 2² = 31223130302107 is a prime.

It is a super-2 number, since 2×31223130302111² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223130302131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4161970430 + ... + 4161977931.

It is an arithmetic number, because the mean of its divisors is an integer number (2952227019056).

Almost surely, 2^{31223130302111} is an apocalyptic number.

31223130302111 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31223130302111 is a deficient number, since it is larger than the sum of its proper divisors (4203593926561).

31223130302111 is a wasteful number, since it uses less digits than its factorization.

31223130302111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323948414 (or 8323948403 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31223130302111 its reverse (11120303132213), we get a palindrome (42343433434324).

The spelling of 31223130302111 in words is "thirty-one trillion, two hundred twenty-three billion, one hundred thirty million, three hundred two thousand, one hundred eleven".