123311277 has 12 divisors (see below), whose sum is σ = 184258620. Its totient is φ = 79372608.

The previous prime is 123311267. The next prime is 123311299. The reversal of 123311277 is 772113321.

It can be written as a sum of positive squares in 2 ways, for example, as 31036041 + 92275236 = 5571^2 + 9606^2 .

It is not a de Polignac number, because 123311277 - 2¹¹ = 123309229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123311277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235968 + ... + 236489.

It is an arithmetic number, because the mean of its divisors is an integer number (15354885).

Almost surely, 2^123311277 is an apocalyptic number.

It is an amenable number.

123311277 is a deficient number, since it is larger than the sum of its proper divisors (60947343).

123311277 is a wasteful number, since it uses less digits than its factorization.

123311277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472492 (or 472489 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 123311277 is about 11104.5610899306. The cubic root of 123311277 is about 497.7381528570.

Adding to 123311277 its reverse (772113321), we get a palindrome (895424598).

The spelling of 123311277 in words is "one hundred twenty-three million, three hundred eleven thousand, two hundred seventy-seven".