1283261631 has 16 divisors (see below), whose sum is σ = 1718556000. Its totient is φ = 851747328.

The previous prime is 1283261611. The next prime is 1283261723. The reversal of 1283261631 is 1361623821.

It is not a de Polignac number, because 1283261631 - 2¹⁰ = 1283260607 is a prime.

It is a super-2 number, since 2×1283261631² = 3293520827193560322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1283261592 and 1283261601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283261611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1222795 + ... + 1223843.

It is an arithmetic number, because the mean of its divisors is an integer number (107409750).

Almost surely, 2^1283261631 is an apocalyptic number.

1283261631 is a deficient number, since it is larger than the sum of its proper divisors (435294369).

1283261631 is a wasteful number, since it uses less digits than its factorization.

1283261631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458.

The product of its digits is 10368, while the sum is 33.

The square root of 1283261631 is about 35822.6413180268. The cubic root of 1283261631 is about 1086.6884965672.

The spelling of 1283261631 in words is "one billion, two hundred eighty-three million, two hundred sixty-one thousand, six hundred thirty-one".