1078631313 has 8 divisors (see below), whose sum is σ = 1443772128. Its totient is φ = 716289024.

The previous prime is 1078631303. The next prime is 1078631381. The reversal of 1078631313 is 3131368701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1078631313 - 2⁴ = 1078631297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1078631303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698731 + ... + 700272.

It is an arithmetic number, because the mean of its divisors is an integer number (180471516).

Almost surely, 2^1078631313 is an apocalyptic number.

It is an amenable number.

1078631313 is a deficient number, since it is larger than the sum of its proper divisors (365140815).

1078631313 is a wasteful number, since it uses less digits than its factorization.

1078631313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399263.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1078631313 is about 32842.5229390192. The cubic root of 1078631313 is about 1025.5519733357.

The spelling of 1078631313 in words is "one billion, seventy-eight million, six hundred thirty-one thousand, three hundred thirteen".