1231235077 has 8 divisors (see below), whose sum is σ = 1257924096. Its totient is φ = 1204566672.

The previous prime is 1231235063. The next prime is 1231235101. The reversal of 1231235077 is 7705321321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231235077 - 2²⁷ = 1097017349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231236077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222063 + ... + 227539.

It is an arithmetic number, because the mean of its divisors is an integer number (157240512).

Almost surely, 2^1231235077 is an apocalyptic number.

It is an amenable number.

1231235077 is a deficient number, since it is larger than the sum of its proper divisors (26689019).

1231235077 is an equidigital number, since it uses as much as digits as its factorization.

1231235077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10307.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 1231235077 is about 35088.9594744558. The cubic root of 1231235077 is about 1071.7997709892.

Adding to 1231235077 its reverse (7705321321), we get a palindrome (8936556398).

The spelling of 1231235077 in words is "one billion, two hundred thirty-one million, two hundred thirty-five thousand, seventy-seven".