1200212331 has 16 divisors (see below), whose sum is σ = 1618415904. Its totient is φ = 791092224.

The previous prime is 1200212309. The next prime is 1200212353. The reversal of 1200212331 is 1332120021.

It is an interprime number because it is at equal distance from previous prime (1200212309) and next prime (1200212353).

It is not a de Polignac number, because 1200212331 - 2⁷ = 1200212203 is a prime.

It is a super-2 number, since 2×1200212331² = 2881019278968907122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1200212331.

It is not an unprimeable number, because it can be changed into a prime (1200212231) 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, 468105 + ... + 470661.

It is an arithmetic number, because the mean of its divisors is an integer number (101150994).

Almost surely, 2^1200212331 is an apocalyptic number.

1200212331 is a deficient number, since it is larger than the sum of its proper divisors (418203573).

1200212331 is a wasteful number, since it uses less digits than its factorization.

1200212331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1200212331 is about 34644.0807498193. The cubic root of 1200212331 is about 1062.7212419742.

Adding to 1200212331 its reverse (1332120021), we get a palindrome (2532332352).

It can be divided in two parts, 1200 and 212331, that added together give a triangular number (213531 = T₆₅₃).

The spelling of 1200212331 in words is "one billion, two hundred million, two hundred twelve thousand, three hundred thirty-one".