1303661971 has 2 divisors, whose sum is σ = 1303661972. Its totient is φ = 1303661970.

The previous prime is 1303661939. The next prime is 1303661977. The reversal of 1303661971 is 1791663031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1303661971 - 2⁵ = 1303661939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1303661971.

It is not a weakly prime, because it can be changed into another prime (1303661977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651830985 + 651830986.

It is an arithmetic number, because the mean of its divisors is an integer number (651830986).

Almost surely, 2^1303661971 is an apocalyptic number.

1303661971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303661971 is an equidigital number, since it uses as much as digits as its factorization.

1303661971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 1303661971 is about 36106.2594434815. The cubic root of 1303661971 is about 1092.4167041452.

The spelling of 1303661971 in words is "one billion, three hundred three million, six hundred sixty-one thousand, nine hundred seventy-one".