1312602985 has 32 divisors (see below), whose sum is σ = 1666552320. Its totient is φ = 990528000.

The previous prime is 1312602979. The next prime is 1312602989. The reversal of 1312602985 is 5892062131.

It is not a de Polignac number, because 1312602985 - 2⁷ = 1312602857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312602989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4671045 + ... + 4671325.

It is an arithmetic number, because the mean of its divisors is an integer number (52079760).

Almost surely, 2^1312602985 is an apocalyptic number.

It is an amenable number.

1312602985 is a deficient number, since it is larger than the sum of its proper divisors (353949335).

1312602985 is a wasteful number, since it uses less digits than its factorization.

1312602985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1312602985 is about 36229.8631656262. The cubic root of 1312602985 is about 1094.9084207169.

The spelling of 1312602985 in words is "one billion, three hundred twelve million, six hundred two thousand, nine hundred eighty-five".