1213310451 has 16 divisors (see below), whose sum is σ = 1717027200. Its totient is φ = 759462528.

The previous prime is 1213310431. The next prime is 1213310473. The reversal of 1213310451 is 1540133121.

It is not a de Polignac number, because 1213310451 - 2¹⁵ = 1213277683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213310431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7021 + ... + 49758.

It is an arithmetic number, because the mean of its divisors is an integer number (107314200).

Almost surely, 2^1213310451 is an apocalyptic number.

1213310451 is a deficient number, since it is larger than the sum of its proper divisors (503716749).

1213310451 is a wasteful number, since it uses less digits than its factorization.

1213310451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57218.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1213310451 is about 34832.6061471145. The cubic root of 1213310451 is about 1066.5731491038.

Adding to 1213310451 its reverse (1540133121), we get a palindrome (2753443572).

The spelling of 1213310451 in words is "one billion, two hundred thirteen million, three hundred ten thousand, four hundred fifty-one".