1319019931 has 2 divisors, whose sum is σ = 1319019932. Its totient is φ = 1319019930.

The previous prime is 1319019929. The next prime is 1319019983. The reversal of 1319019931 is 1399109131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1319019931 - 2¹ = 1319019929 is a prime.

It is a super-2 number, since 2×1319019931² = 3479627156750489522, which contains 22 as substring.

Together with 1319019929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1319019131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659509965 + 659509966.

It is an arithmetic number, because the mean of its divisors is an integer number (659509966).

Almost surely, 2^1319019931 is an apocalyptic number.

1319019931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319019931 is an equidigital number, since it uses as much as digits as its factorization.

1319019931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 37.

The square root of 1319019931 is about 36318.3139889505. The cubic root of 1319019931 is about 1096.6897539303.

The spelling of 1319019931 in words is "one billion, three hundred nineteen million, nineteen thousand, nine hundred thirty-one".