1213214031 has 20 divisors (see below), whose sum is σ = 1829940112. Its totient is φ = 800951328.

The previous prime is 1213214021. The next prime is 1213214033. The reversal of 1213214031 is 1304123121.

It is not a de Polignac number, because 1213214031 - 2⁵ = 1213213999 is a prime.

It is a super-2 number, since 2×1213214031² = 2943776570030537922, 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 = 1213213995 and 1213214013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213214033) 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 19 ways as a sum of consecutive naturals, for example, 64366 + ... + 81051.

Almost surely, 2^1213214031 is an apocalyptic number.

1213214031 is a deficient number, since it is larger than the sum of its proper divisors (616726081).

1213214031 is a wasteful number, since it uses less digits than its factorization.

1213214031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145532 (or 145523 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1213214031 is about 34831.2220715840. Note that the first 3 decimals coincide. The cubic root of 1213214031 is about 1066.5448953547.

Adding to 1213214031 its reverse (1304123121), we get a palindrome (2517337152).

The spelling of 1213214031 in words is "one billion, two hundred thirteen million, two hundred fourteen thousand, thirty-one".