1235132281 has 2 divisors, whose sum is σ = 1235132282. Its totient is φ = 1235132280.

The previous prime is 1235132237. The next prime is 1235132293. The reversal of 1235132281 is 1822315321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1068309225 + 166823056 = 32685^2 + 12916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235132281 is a prime.

It is a super-2 number, since 2×1235132281² = 3051103503136525922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1235132201) 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 as a sum of consecutive naturals, namely, 617566140 + 617566141.

It is an arithmetic number, because the mean of its divisors is an integer number (617566141).

Almost surely, 2^1235132281 is an apocalyptic number.

It is an amenable number.

1235132281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235132281 is an equidigital number, since it uses as much as digits as its factorization.

1235132281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 1235132281 is about 35144.4487935150. The cubic root of 1235132281 is about 1072.9294287931.

The spelling of 1235132281 in words is "one billion, two hundred thirty-five million, one hundred thirty-two thousand, two hundred eighty-one".