1307628971 has 16 divisors (see below), whose sum is σ = 1468965888. Its totient is φ = 1163405320.

The previous prime is 1307628941. The next prime is 1307628983. The reversal of 1307628971 is 1798267031.

It is a de Polignac number, because none of the positive numbers 2^k-1307628971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1307628911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52106 + ... + 73008.

It is an arithmetic number, because the mean of its divisors is an integer number (91810368).

Almost surely, 2^1307628971 is an apocalyptic number.

1307628971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1307628971 is a deficient number, since it is larger than the sum of its proper divisors (161336917).

1307628971 is an equidigital number, since it uses as much as digits as its factorization.

1307628971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20983 (or 20961 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 1307628971 is about 36161.1527885935. The cubic root of 1307628971 is about 1093.5236446695.

The spelling of 1307628971 in words is "one billion, three hundred seven million, six hundred twenty-eight thousand, nine hundred seventy-one".