1312494015 has 32 divisors (see below), whose sum is σ = 2403104256. Its totient is φ = 599218560.

The previous prime is 1312494013. The next prime is 1312494019. The reversal of 1312494015 is 5104942131.

It is not a de Polignac number, because 1312494015 - 2¹ = 1312494013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312494013) 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, 77449 + ... + 92861.

It is an arithmetic number, because the mean of its divisors is an integer number (75097008).

Almost surely, 2^1312494015 is an apocalyptic number.

1312494015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1312494015 is a deficient number, since it is larger than the sum of its proper divisors (1090610241).

1312494015 is a wasteful number, since it uses less digits than its factorization.

1312494015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16239.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1312494015 is about 36228.3592645320. The cubic root of 1312494015 is about 1094.8781207522.

The spelling of 1312494015 in words is "one billion, three hundred twelve million, four hundred ninety-four thousand, fifteen".