1331945707 has 2 divisors, whose sum is σ = 1331945708. Its totient is φ = 1331945706.

The previous prime is 1331945651. The next prime is 1331945711. The reversal of 1331945707 is 7075491331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331945707 - 2⁷ = 1331945579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1331945707.

It is not a weakly prime, because it can be changed into another prime (1331945107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665972853 + 665972854.

It is an arithmetic number, because the mean of its divisors is an integer number (665972854).

Almost surely, 2^1331945707 is an apocalyptic number.

1331945707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331945707 is an equidigital number, since it uses as much as digits as its factorization.

1331945707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 1331945707 is about 36495.8313646915. The cubic root of 1331945707 is about 1100.2604636656.

The spelling of 1331945707 in words is "one billion, three hundred thirty-one million, nine hundred forty-five thousand, seven hundred seven".