1213351258 has 16 divisors (see below), whose sum is σ = 2080483200. Its totient is φ = 519894576.

The previous prime is 1213351241. The next prime is 1213351259. The reversal of 1213351258 is 8521533121.

It is not an unprimeable number, because it can be changed into a prime (1213351259) 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, 105835 + ... + 116737.

It is an arithmetic number, because the mean of its divisors is an integer number (130030200).

Almost surely, 2^1213351258 is an apocalyptic number.

1213351258 is a deficient number, since it is larger than the sum of its proper divisors (867131942).

1213351258 is a wasteful number, since it uses less digits than its factorization.

1213351258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18861.

The product of its digits is 7200, while the sum is 31.

The square root of 1213351258 is about 34833.1919008293. The cubic root of 1213351258 is about 1066.5851062421.

Adding to 1213351258 its reverse (8521533121), we get a palindrome (9734884379).

The spelling of 1213351258 in words is "one billion, two hundred thirteen million, three hundred fifty-one thousand, two hundred fifty-eight".