1231021014 has 16 divisors (see below), whose sum is σ = 2478567600. Its totient is φ = 407586080.

The previous prime is 1231021013. The next prime is 1231021021. The reversal of 1231021014 is 4101201321.

It is a junction number, because it is equal to n+sod(n) for n = 1231020984 and 1231021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231021013) 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, 687597 + ... + 689384.

It is an arithmetic number, because the mean of its divisors is an integer number (154910475).

Almost surely, 2^1231021014 is an apocalyptic number.

1231021014 is an abundant number, since it is smaller than the sum of its proper divisors (1247546586).

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

1231021014 is a wasteful number, since it uses less digits than its factorization.

1231021014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377135.

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

The square root of 1231021014 is about 35085.9090519257. The cubic root of 1231021014 is about 1071.7376528834.

Adding to 1231021014 its reverse (4101201321), we get a palindrome (5332222335).

The spelling of 1231021014 in words is "one billion, two hundred thirty-one million, twenty-one thousand, fourteen".