1202231131 has 2 divisors, whose sum is σ = 1202231132. Its totient is φ = 1202231130.

The previous prime is 1202231081. The next prime is 1202231159. The reversal of 1202231131 is 1311322021.

It is a strong prime.

It is an emirp because it is prime and its reverse (1311322021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202231131 - 2¹⁵ = 1202198363 is a prime.

It is a super-2 number, since 2×1202231131² = 2890719384691078322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1202231231) 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 as a sum of consecutive naturals, namely, 601115565 + 601115566.

It is an arithmetic number, because the mean of its divisors is an integer number (601115566).

Almost surely, 2^1202231131 is an apocalyptic number.

1202231131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202231131 is an equidigital number, since it uses as much as digits as its factorization.

1202231131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1202231131 is about 34673.2047985184. The cubic root of 1202231131 is about 1063.3167532347.

Adding to 1202231131 its reverse (1311322021), we get a palindrome (2513553152).

The spelling of 1202231131 in words is "one billion, two hundred two million, two hundred thirty-one thousand, one hundred thirty-one".