1282145231 has 6 divisors (see below), whose sum is σ = 1285115160. Its totient is φ = 1279182116.

The previous prime is 1282145171. The next prime is 1282145237. The reversal of 1282145231 is 1325412821.

It is a happy number.

It is not a de Polignac number, because 1282145231 - 2²⁶ = 1215036367 is a prime.

It is a super-2 number, since 2×1282145231² = 3287792786752086722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1282145194 and 1282145203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282145237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215150 + ... + 221028.

It is an arithmetic number, because the mean of its divisors is an integer number (214185860).

Almost surely, 2^1282145231 is an apocalyptic number.

1282145231 is a deficient number, since it is larger than the sum of its proper divisors (2969929).

1282145231 is an frugal number, since it uses more digits than its factorization.

1282145231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813 (or 6346 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1282145231 is about 35807.0556036097. The cubic root of 1282145231 is about 1086.3732760934.

The spelling of 1282145231 in words is "one billion, two hundred eighty-two million, one hundred forty-five thousand, two hundred thirty-one".