1202312231 has 2 divisors, whose sum is σ = 1202312232. Its totient is φ = 1202312230.

The previous prime is 1202312227. The next prime is 1202312239. The reversal of 1202312231 is 1322132021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1202312231 - 2² = 1202312227 is a prime.

It is a super-2 number, since 2×1202312231² = 2891109401624394722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202312239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601156115 + 601156116.

It is an arithmetic number, because the mean of its divisors is an integer number (601156116).

Almost surely, 2^1202312231 is an apocalyptic number.

1202312231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202312231 is an equidigital number, since it uses as much as digits as its factorization.

1202312231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1202312231 is about 34674.3742697687. The cubic root of 1202312231 is about 1063.3406624058.

Adding to 1202312231 its reverse (1322132021), we get a palindrome (2524444252).

The spelling of 1202312231 in words is "one billion, two hundred two million, three hundred twelve thousand, two hundred thirty-one".