1213034331 has 4 divisors (see below), whose sum is σ = 1617379112. Its totient is φ = 808689552.

The previous prime is 1213034299. The next prime is 1213034363. The reversal of 1213034331 is 1334303121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1334303121 = 3 ⋅444767707.

It is an interprime number because it is at equal distance from previous prime (1213034299) and next prime (1213034363).

It is not a de Polignac number, because 1213034331 - 2⁵ = 1213034299 is a prime.

It is a super-2 number, since 2×1213034331² = 2942904576369235122, 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 = 1213034298 and 1213034307.

It is not an unprimeable number, because it can be changed into a prime (1213034231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202172386 + ... + 202172391.

It is an arithmetic number, because the mean of its divisors is an integer number (404344778).

Almost surely, 2^1213034331 is an apocalyptic number.

1213034331 is a deficient number, since it is larger than the sum of its proper divisors (404344781).

1213034331 is an equidigital number, since it uses as much as digits as its factorization.

1213034331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404344780.

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

The square root of 1213034331 is about 34828.6423938689. The cubic root of 1213034331 is about 1066.4922342478.

Adding to 1213034331 its reverse (1334303121), we get a palindrome (2547337452).

The spelling of 1213034331 in words is "one billion, two hundred thirteen million, thirty-four thousand, three hundred thirty-one".