1031213211 has 16 divisors (see below), whose sum is σ = 1639693824. Its totient is φ = 563644224.

The previous prime is 1031213173. The next prime is 1031213219. The reversal of 1031213211 is 1123121301.

It is a happy number.

It is not a de Polignac number, because 1031213211 - 2⁷ = 1031213083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031213219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1067026 + ... + 1067991.

It is an arithmetic number, because the mean of its divisors is an integer number (102480864).

Almost surely, 2^1031213211 is an apocalyptic number.

1031213211 is a deficient number, since it is larger than the sum of its proper divisors (608480613).

1031213211 is a wasteful number, since it uses less digits than its factorization.

1031213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135050.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1031213211 is about 32112.5086376010. The cubic root of 1031213211 is about 1010.2979910184.

Adding to 1031213211 its reverse (1123121301), we get a palindrome (2154334512).

The spelling of 1031213211 in words is "one billion, thirty-one million, two hundred thirteen thousand, two hundred eleven".