31012030111 has 8 divisors (see below), whose sum is σ = 31917634560. Its totient is φ = 30119091672.

The previous prime is 31012030087. The next prime is 31012030117. The reversal of 31012030111 is 11103021013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31012030111 - 2²¹ = 31009932959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31012030091 and 31012030100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012030117) 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 7 ways as a sum of consecutive naturals, for example, 3161535 + ... + 3171328.

It is an arithmetic number, because the mean of its divisors is an integer number (3989704320).

Almost surely, 2^31012030111 is an apocalyptic number.

31012030111 is a deficient number, since it is larger than the sum of its proper divisors (905604449).

31012030111 is an equidigital number, since it uses as much as digits as its factorization.

31012030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333005.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31012030111 its reverse (11103021013), we get a palindrome (42115051124).

The spelling of 31012030111 in words is "thirty-one billion, twelve million, thirty thousand, one hundred eleven".