1318919031 has 10 divisors (see below), whose sum is σ = 1970237192. Its totient is φ = 879279300.

The previous prime is 1318919023. The next prime is 1318919033. The reversal of 1318919031 is 1309198131.

It is not a de Polignac number, because 1318919031 - 2³ = 1318919023 is a prime.

It is a super-2 number, since 2×1318919031² = 3479094820667957922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318919033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8141395 + ... + 8141556.

Almost surely, 2^1318919031 is an apocalyptic number.

1318919031 is a deficient number, since it is larger than the sum of its proper divisors (651318161).

1318919031 is an equidigital number, since it uses as much as digits as its factorization.

1318919031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16282963 (or 16282954 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 1318919031 is about 36316.9248560502. The cubic root of 1318919031 is about 1096.6617890211.

The spelling of 1318919031 in words is "one billion, three hundred eighteen million, nine hundred nineteen thousand, thirty-one".