1212031031 has 12 divisors (see below), whose sum is σ = 1289149488. Its totient is φ = 1139292672.

The previous prime is 1212031027. The next prime is 1212031061. The reversal of 1212031031 is 1301302121.

It is not a de Polignac number, because 1212031031 - 2² = 1212031027 is a prime.

It is a super-2 number, since 2×1212031031² = 2938038440213845922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212030997 and 1212031015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212031061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277295 + ... + 281631.

It is an arithmetic number, because the mean of its divisors is an integer number (107429124).

Almost surely, 2^1212031031 is an apocalyptic number.

1212031031 is a deficient number, since it is larger than the sum of its proper divisors (77118457).

1212031031 is an equidigital number, since it uses as much as digits as its factorization.

1212031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5338 (or 5321 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1212031031 is about 34814.2360392986. The cubic root of 1212031031 is about 1066.1981214408.

Adding to 1212031031 its reverse (1301302121), we get a palindrome (2513333152).

The spelling of 1212031031 in words is "one billion, two hundred twelve million, thirty-one thousand, thirty-one".