1005212351 has 16 divisors (see below), whose sum is σ = 1200319008. Its totient is φ = 829699200.

The previous prime is 1005212311. The next prime is 1005212371. The reversal of 1005212351 is 1532125001.

It is a happy number.

It is not a de Polignac number, because 1005212351 - 2⁶ = 1005212287 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 (1005212311) 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, 48896 + ... + 66341.

It is an arithmetic number, because the mean of its divisors is an integer number (75019938).

Almost surely, 2^1005212351 is an apocalyptic number.

1005212351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1005212351 is a deficient number, since it is larger than the sum of its proper divisors (195106657).

1005212351 is a wasteful number, since it uses less digits than its factorization.

1005212351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115322.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1005212351 is about 31705.0839929498. The cubic root of 1005212351 is about 1001.7344403109.

Adding to 1005212351 its reverse (1532125001), we get a palindrome (2537337352).

The spelling of 1005212351 in words is "one billion, five million, two hundred twelve thousand, three hundred fifty-one".