1380007931 has 2 divisors, whose sum is σ = 1380007932. Its totient is φ = 1380007930.

The previous prime is 1380007921. The next prime is 1380007933. The reversal of 1380007931 is 1397000831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1380007931 - 2²² = 1375813627 is a prime.

It is a super-2 number, since 2×1380007931² = 3808843779245801522, which contains 22 as substring.

Together with 1380007933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1380007933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690003965 + 690003966.

It is an arithmetic number, because the mean of its divisors is an integer number (690003966).

Almost surely, 2^1380007931 is an apocalyptic number.

1380007931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380007931 is an equidigital number, since it uses as much as digits as its factorization.

1380007931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1380007931 is about 37148.4579895317. The cubic root of 1380007931 is about 1113.3384143357.

The spelling of 1380007931 in words is "one billion, three hundred eighty million, seven thousand, nine hundred thirty-one".