1265130312 has 32 divisors (see below), whose sum is σ = 3187737600. Its totient is φ = 418388544.

The previous prime is 1265130287. The next prime is 1265130331. The reversal of 1265130312 is 2130315621.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204487 + ... + 210582.

It is an arithmetic number, because the mean of its divisors is an integer number (99616800).

Almost surely, 2^1265130312 is an apocalyptic number.

1265130312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265130312 is an abundant number, since it is smaller than the sum of its proper divisors (1922607288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265130312 is a wasteful number, since it uses less digits than its factorization.

1265130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415205 (or 415201 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1265130312 is about 35568.6703715503. The cubic root of 1265130312 is about 1081.5462282922.

Adding to 1265130312 its reverse (2130315621), we get a palindrome (3395445933).

The spelling of 1265130312 in words is "one billion, two hundred sixty-five million, one hundred thirty thousand, three hundred twelve".