1231950803 has 2 divisors, whose sum is σ = 1231950804. Its totient is φ = 1231950802.

The previous prime is 1231950791. The next prime is 1231950859. The reversal of 1231950803 is 3080591321.

It is a weak prime.

It is an emirp because it is prime and its reverse (3080591321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231950803 - 2²⁰ = 1230902227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231950803.

It is not a weakly prime, because it can be changed into another prime (1231950893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615975401 + 615975402.

It is an arithmetic number, because the mean of its divisors is an integer number (615975402).

Almost surely, 2^1231950803 is an apocalyptic number.

1231950803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231950803 is an equidigital number, since it uses as much as digits as its factorization.

1231950803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1231950803 is about 35099.1567277620. The cubic root of 1231950803 is about 1072.0074124548.

The spelling of 1231950803 in words is "one billion, two hundred thirty-one million, nine hundred fifty thousand, eight hundred three".