1431130387 has 2 divisors, whose sum is σ = 1431130388. Its totient is φ = 1431130386.

The previous prime is 1431130291. The next prime is 1431130411. The reversal of 1431130387 is 7830311341.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431130387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431130087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715565193 + 715565194.

It is an arithmetic number, because the mean of its divisors is an integer number (715565194).

Almost surely, 2^1431130387 is an apocalyptic number.

1431130387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431130387 is an equidigital number, since it uses as much as digits as its factorization.

1431130387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1431130387 is about 37830.2839931185. The cubic root of 1431130387 is about 1126.9199510012.

The spelling of 1431130387 in words is "one billion, four hundred thirty-one million, one hundred thirty thousand, three hundred eighty-seven".