1213343031 has 8 divisors (see below), whose sum is σ = 1617983344. Its totient is φ = 808799040.

The previous prime is 1213343029. The next prime is 1213343063. The reversal of 1213343031 is 1303433121.

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

It is not a de Polignac number, because 1213343031 - 2¹ = 1213343029 is a prime.

It is a super-2 number, since 2×1213343031² = 2944402621752533922, 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 = 1213342989 and 1213343007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213343231) 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 7 ways as a sum of consecutive naturals, for example, 13851 + ... + 51171.

It is an arithmetic number, because the mean of its divisors is an integer number (202247918).

Almost surely, 2^1213343031 is an apocalyptic number.

1213343031 is a deficient number, since it is larger than the sum of its proper divisors (404640313).

1213343031 is a wasteful number, since it uses less digits than its factorization.

1213343031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48161.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1213343031 is about 34833.0738092406. The cubic root of 1213343031 is about 1066.5826956141.

Adding to 1213343031 its reverse (1303433121), we get a palindrome (2516776152).

The spelling of 1213343031 in words is "one billion, two hundred thirteen million, three hundred forty-three thousand, thirty-one".