1331123 has 2 divisors, whose sum is σ = 1331124. Its totient is φ = 1331122.

The previous prime is 1331119. The next prime is 1331153. The reversal of 1331123 is 3211331.

It is a weak prime.

It is an emirp because it is prime and its reverse (3211331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331123 - 2² = 1331119 is a prime.

It is a super-2 number, since 2×1331123² = 3543776882258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331098 and 1331107.

It is not a weakly prime, because it can be changed into another prime (1331153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665561 + 665562.

It is an arithmetic number, because the mean of its divisors is an integer number (665562).

2^1331123 is an apocalyptic number.

1331123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331123 is an equidigital number, since it uses as much as digits as its factorization.

1331123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 14.

The square root of 1331123 is about 1153.7430389823. The cubic root of 1331123 is about 110.0033883254.

Adding to 1331123 its reverse (3211331), we get a palindrome (4542454).

It can be divided in two parts, 13311 and 23, that multiplied together give a triangular number (306153 = T₇₈₂).

The spelling of 1331123 in words is "one million, three hundred thirty-one thousand, one hundred twenty-three".