1213234851 has 8 divisors (see below), whose sum is σ = 1617853120. Its totient is φ = 808719912.

The previous prime is 1213234849. The next prime is 1213234907. The reversal of 1213234851 is 1584323121.

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

It is not a de Polignac number, because 1213234851 - 2¹ = 1213234849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213234811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7836 + ... + 49878.

It is an arithmetic number, because the mean of its divisors is an integer number (202231640).

Almost surely, 2^1213234851 is an apocalyptic number.

1213234851 is a deficient number, since it is larger than the sum of its proper divisors (404618269).

1213234851 is an equidigital number, since it uses as much as digits as its factorization.

1213234851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51665.

The product of its digits is 5760, while the sum is 30.

The square root of 1213234851 is about 34831.5209400910. The cubic root of 1213234851 is about 1066.5509963221.

Adding to 1213234851 its reverse (1584323121), we get a palindrome (2797557972).

The spelling of 1213234851 in words is "one billion, two hundred thirteen million, two hundred thirty-four thousand, eight hundred fifty-one".