1200201031 has 4 divisors (see below), whose sum is σ = 1200302064. Its totient is φ = 1200100000.

The previous prime is 1200201029. The next prime is 1200201043. The reversal of 1200201031 is 1301020021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1200201031 - 2¹ = 1200201029 is a prime.

It is a super-2 number, since 2×1200201031² = 2880965029626925922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200200999 and 1200201017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200201061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29890 + ... + 57391.

It is an arithmetic number, because the mean of its divisors is an integer number (300075516).

Almost surely, 2^1200201031 is an apocalyptic number.

1200201031 is a deficient number, since it is larger than the sum of its proper divisors (101033).

1200201031 is an equidigital number, since it uses as much as digits as its factorization.

1200201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101032.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1200201031 is about 34643.9176624123. The cubic root of 1200201031 is about 1062.7179067900.

Adding to 1200201031 its reverse (1301020021), we get a palindrome (2501221052).

The spelling of 1200201031 in words is "one billion, two hundred million, two hundred one thousand, thirty-one".