1231269255 has 40 divisors (see below), whose sum is σ = 2323345200. Its totient is φ = 622111104.

The previous prime is 1231269197. The next prime is 1231269307. The reversal of 1231269255 is 5529621321.

It is a happy number.

It is not a de Polignac number, because 1231269255 - 2⁹ = 1231268743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 72310 + ... + 87699.

It is an arithmetic number, because the mean of its divisors is an integer number (58083630).

Almost surely, 2^1231269255 is an apocalyptic number.

1231269255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1231269255 is a deficient number, since it is larger than the sum of its proper divisors (1092075945).

1231269255 is a wasteful number, since it uses less digits than its factorization.

1231269255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160045 (or 160036 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 1231269255 is about 35089.4464903623. The cubic root of 1231269255 is about 1071.8096883029.

The spelling of 1231269255 in words is "one billion, two hundred thirty-one million, two hundred sixty-nine thousand, two hundred fifty-five".