1210312231 has 2 divisors, whose sum is σ = 1210312232. Its totient is φ = 1210312230.

The previous prime is 1210312223. The next prime is 1210312237. The reversal of 1210312231 is 1322130121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1210312231 - 2³ = 1210312223 is a prime.

It is a super-2 number, since 2×1210312231² = 2929711393016394722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210312237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605156115 + 605156116.

It is an arithmetic number, because the mean of its divisors is an integer number (605156116).

Almost surely, 2^1210312231 is an apocalyptic number.

1210312231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210312231 is an equidigital number, since it uses as much as digits as its factorization.

1210312231 is an evil number, because the sum of its binary digits is even.

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

The square root of 1210312231 is about 34789.5419774391. The cubic root of 1210312231 is about 1065.6938856476.

Adding to 1210312231 its reverse (1322130121), we get a palindrome (2532442352).

The spelling of 1210312231 in words is "one billion, two hundred ten million, three hundred twelve thousand, two hundred thirty-one".