31231123011230 has 64 divisors (see below), whose sum is σ = 57668526393408. Its totient is φ = 12172968437760.

The previous prime is 31231123011227. The next prime is 31231123011269. The reversal of 31231123011230 is 3211032113213.

It is a super-2 number, since 2×31231123011230² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31231123011196 and 31231123011205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179729969 + ... + 179903651.

It is an arithmetic number, because the mean of its divisors is an integer number (901070724897).

Almost surely, 2^{31231123011230} is an apocalyptic number.

31231123011230 is a deficient number, since it is larger than the sum of its proper divisors (26437403382178).

31231123011230 is a wasteful number, since it uses less digits than its factorization.

31231123011230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176061.

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

Adding to 31231123011230 its reverse (3211032113213), we get a palindrome (34442155124443).

The spelling of 31231123011230 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred twenty-three million, eleven thousand, two hundred thirty".