1231077 has 4 divisors (see below), whose sum is σ = 1641440. Its totient is φ = 820716.

The previous prime is 1231073. The next prime is 1231091. The reversal of 1231077 is 7701321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1231077 - 2² = 1231073 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205177 + ... + 205182.

It is an arithmetic number, because the mean of its divisors is an integer number (410360).

2^1231077 is an apocalyptic number.

It is an amenable number.

1231077 is a deficient number, since it is larger than the sum of its proper divisors (410363).

1231077 is an equidigital number, since it uses as much as digits as its factorization.

1231077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410362.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 1231077 is about 1109.5390934978. The cubic root of 1231077 is about 107.1753899937.

Adding to 1231077 its reverse (7701321), we get a palindrome (8932398).

The spelling of 1231077 in words is "one million, two hundred thirty-one thousand, seventy-seven".