1323777231 has 96 divisors (see below), whose sum is σ = 2353747968. Its totient is φ = 701084160.

The previous prime is 1323777227. The next prime is 1323777281. The reversal of 1323777231 is 1327773231.

It is not a de Polignac number, because 1323777231 - 2² = 1323777227 is a prime.

It is a super-2 number, since 2×1323777231² = 3504772314628054722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323777281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4710811 + ... + 4711091.

It is an arithmetic number, because the mean of its divisors is an integer number (24518208).

Almost surely, 2^1323777231 is an apocalyptic number.

1323777231 is a deficient number, since it is larger than the sum of its proper divisors (1029970737).

1323777231 is a wasteful number, since it uses less digits than its factorization.

1323777231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 418 counting only the distinct ones).

The product of its digits is 37044, while the sum is 36.

The square root of 1323777231 is about 36383.7495456419. The cubic root of 1323777231 is about 1098.0066464208.

The spelling of 1323777231 in words is "one billion, three hundred twenty-three million, seven hundred seventy-seven thousand, two hundred thirty-one".