1201331031 has 16 divisors (see below), whose sum is σ = 1688332800. Its totient is φ = 757721088.

The previous prime is 1201330987. The next prime is 1201331057. The reversal of 1201331031 is 1301331021.

It is not a de Polignac number, because 1201331031 - 2⁷ = 1201330903 is a prime.

It is a super-2 number, since 2×1201331031² = 2886392492087045922, 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 1201331031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201333031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30130 + ... + 57536.

It is an arithmetic number, because the mean of its divisors is an integer number (105520800).

Almost surely, 2^1201331031 is an apocalyptic number.

1201331031 is a deficient number, since it is larger than the sum of its proper divisors (487001769).

1201331031 is a wasteful number, since it uses less digits than its factorization.

1201331031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28198.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1201331031 is about 34660.2226045939. Note that the first 3 decimals coincide. The cubic root of 1201331031 is about 1063.0513216440.

Adding to 1201331031 its reverse (1301331021), we get a palindrome (2502662052).

The spelling of 1201331031 in words is "one billion, two hundred one million, three hundred thirty-one thousand, thirty-one".