1203021311231 has 2 divisors, whose sum is σ = 1203021311232. Its totient is φ = 1203021311230.

The previous prime is 1203021311137. The next prime is 1203021311243. The reversal of 1203021311231 is 1321131203021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203021311231 is a prime.

It is a super-2 number, since 2×1203021311231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203021311291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601510655615 + 601510655616.

It is an arithmetic number, because the mean of its divisors is an integer number (601510655616).

Almost surely, 2^{1203021311231} is an apocalyptic number.

1203021311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203021311231 is an equidigital number, since it uses as much as digits as its factorization.

1203021311231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1203021311231 its reverse (1321131203021), we get a palindrome (2524152514252).

The spelling of 1203021311231 in words is "one trillion, two hundred three billion, twenty-one million, three hundred eleven thousand, two hundred thirty-one".