1311608392 has 16 divisors (see below), whose sum is σ = 2484620460. Its totient is φ = 649042944.

The previous prime is 1311608377. The next prime is 1311608407. The reversal of 1311608392 is 2938061131.

It is an interprime number because it is at equal distance from previous prime (1311608377) and next prime (1311608407).

It can be written as a sum of positive squares in 2 ways, for example, as 1310005636 + 1602756 = 36194^2 + 1266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844333 + ... + 845884.

Almost surely, 2^1311608392 is an apocalyptic number.

It is an amenable number.

1311608392 is a deficient number, since it is larger than the sum of its proper divisors (1173012068).

1311608392 is a wasteful number, since it uses less digits than its factorization.

1311608392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690320 (or 1690316 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1311608392 is about 36216.1344154784. The cubic root of 1311608392 is about 1094.6318040931.

The spelling of 1311608392 in words is "one billion, three hundred eleven million, six hundred eight thousand, three hundred ninety-two".