1213011351 has 12 divisors (see below), whose sum is σ = 1752790312. Its totient is φ = 808368336.

The previous prime is 1213011343. The next prime is 1213011379. The reversal of 1213011351 is 1531103121.

1213011351 is a `hidden beast` number, since 12 + 1 + 301 + 1 + 351 = 666.

It is not a de Polignac number, because 1213011351 - 2³ = 1213011343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213011301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1080 + ... + 49266.

Almost surely, 2^1213011351 is an apocalyptic number.

1213011351 is a deficient number, since it is larger than the sum of its proper divisors (539778961).

1213011351 is a wasteful number, since it uses less digits than its factorization.

1213011351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50990 (or 50987 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1213011351 is about 34828.3124914200. The cubic root of 1213011351 is about 1066.4854995810.

Adding to 1213011351 its reverse (1531103121), we get a palindrome (2744114472).

The spelling of 1213011351 in words is "one billion, two hundred thirteen million, eleven thousand, three hundred fifty-one".