1311990039 has 12 divisors (see below), whose sum is σ = 1895518872. Its totient is φ = 874465200.

The previous prime is 1311989999. The next prime is 1311990059. The reversal of 1311990039 is 9300991131.

It is not a de Polignac number, because 1311990039 - 2⁹ = 1311989527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311989985 and 1311990012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311990059) 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, 34884 + ... + 61974.

It is an arithmetic number, because the mean of its divisors is an integer number (157959906).

Almost surely, 2^1311990039 is an apocalyptic number.

1311990039 is a deficient number, since it is larger than the sum of its proper divisors (583528833).

1311990039 is a wasteful number, since it uses less digits than its factorization.

1311990039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32478 (or 32475 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 1311990039 is about 36221.4030512348. The cubic root of 1311990039 is about 1094.7379644465.

The spelling of 1311990039 in words is "one billion, three hundred eleven million, nine hundred ninety thousand, thirty-nine".