1311225039 has 12 divisors (see below), whose sum is σ = 1896865672. Its totient is φ = 872823600.

The previous prime is 1311225031. The next prime is 1311225043. The reversal of 1311225039 is 9305221131.

1311225039 is a `hidden beast` number, since 1 + 31 + 122 + 503 + 9 = 666.

It is not a de Polignac number, because 1311225039 - 2³ = 1311225031 is a prime.

It is a super-2 number, since 2×1311225039² = 3438622205801103042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311225031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104257 + ... + 116154.

Almost surely, 2^1311225039 is an apocalyptic number.

1311225039 is a deficient number, since it is larger than the sum of its proper divisors (585640633).

1311225039 is a wasteful number, since it uses less digits than its factorization.

1311225039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221078 (or 221075 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1311225039 is about 36210.8414566687. The cubic root of 1311225039 is about 1094.5251484587.

It can be divided in two parts, 131122 and 5039, that added together give a square (136161 = 369²).

The spelling of 1311225039 in words is "one billion, three hundred eleven million, two hundred twenty-five thousand, thirty-nine".