1213073897 has 16 divisors (see below), whose sum is σ = 1429870080. Its totient is φ = 1007391168.

The previous prime is 1213073893. The next prime is 1213073921. The reversal of 1213073897 is 7983703121.

It is not a de Polignac number, because 1213073897 - 2² = 1213073893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213073893) 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 15 ways as a sum of consecutive naturals, for example, 52103 + ... + 71699.

It is an arithmetic number, because the mean of its divisors is an integer number (89366880).

Almost surely, 2^1213073897 is an apocalyptic number.

It is an amenable number.

1213073897 is a deficient number, since it is larger than the sum of its proper divisors (216796183).

1213073897 is a wasteful number, since it uses less digits than its factorization.

1213073897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19880.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 1213073897 is about 34829.2103987443. The cubic root of 1213073897 is about 1066.5038295154.

The spelling of 1213073897 in words is "one billion, two hundred thirteen million, seventy-three thousand, eight hundred ninety-seven".