1031212205 has 8 divisors (see below), whose sum is σ = 1244292504. Its totient is φ = 820411200.

The previous prime is 1031212183. The next prime is 1031212211. The reversal of 1031212205 is 5022121301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 92525161 + 938687044 = 9619^2 + 30638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1031212205 is a prime.

It is a super-2 number, since 2×1031212205² = 2126797223481924050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568826 + ... + 570635.

It is an arithmetic number, because the mean of its divisors is an integer number (155536563).

Almost surely, 2^1031212205 is an apocalyptic number.

It is an amenable number.

1031212205 is a deficient number, since it is larger than the sum of its proper divisors (213080299).

1031212205 is a wasteful number, since it uses less digits than its factorization.

1031212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139647.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1031212205 is about 32112.4929739190. The cubic root of 1031212205 is about 1010.2976624862.

Adding to 1031212205 its reverse (5022121301), we get a palindrome (6053333506).

The spelling of 1031212205 in words is "one billion, thirty-one million, two hundred twelve thousand, two hundred five".