31012021014 has 16 divisors (see below), whose sum is σ = 66795122352. Its totient is φ = 9542160288.

The previous prime is 31012021009. The next prime is 31012021021. The reversal of 31012021014 is 41012021013.

It is a junction number, because it is equal to n+sod(n) for n = 31012020984 and 31012021002.

It is a congruent number.

It is an unprimeable number.

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, 198794929 + ... + 198795084.

It is an arithmetic number, because the mean of its divisors is an integer number (4174695147).

Almost surely, 2^31012021014 is an apocalyptic number.

31012021014 is an abundant number, since it is smaller than the sum of its proper divisors (35783101338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31012021014 is a wasteful number, since it uses less digits than its factorization.

31012021014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397590031.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 31012021014 its reverse (41012021013), we get a palindrome (72024042027).

Subtracting 31012021014 from its reverse (41012021013), we obtain a palindrome (9999999999).

The spelling of 31012021014 in words is "thirty-one billion, twelve million, twenty-one thousand, fourteen".