1231132469 has 8 divisors (see below), whose sum is σ = 1489773888. Its totient is φ = 993182400.

The previous prime is 1231132459. The next prime is 1231132471. The reversal of 1231132469 is 9642311321.

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

It is not a de Polignac number, because 1231132469 - 2⁴ = 1231132453 is a prime.

It is a super-2 number, since 2×1231132469² = 3031374312452071922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231132459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5172707 + ... + 5172944.

It is an arithmetic number, because the mean of its divisors is an integer number (186221736).

Almost surely, 2^1231132469 is an apocalyptic number.

It is an amenable number.

1231132469 is a deficient number, since it is larger than the sum of its proper divisors (258641419).

1231132469 is a wasteful number, since it uses less digits than its factorization.

1231132469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10345675.

The product of its digits is 7776, while the sum is 32.

The square root of 1231132469 is about 35087.4973316707. The cubic root of 1231132469 is about 1071.7699964730.

The spelling of 1231132469 in words is "one billion, two hundred thirty-one million, one hundred thirty-two thousand, four hundred sixty-nine".