1231466145 has 64 divisors (see below), whose sum is σ = 2567738880. Its totient is φ = 489074688.

The previous prime is 1231466143. The next prime is 1231466149. The reversal of 1231466145 is 5416641321.

It is not a de Polignac number, because 1231466145 - 2¹ = 1231466143 is a prime.

It is a super-2 number, since 2×1231466145² = 3033017732562322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231466143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3330 + ... + 49739.

It is an arithmetic number, because the mean of its divisors is an integer number (40120920).

Almost surely, 2^1231466145 is an apocalyptic number.

1231466145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1231466145 is an abundant number, since it is smaller than the sum of its proper divisors (1336272735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231466145 is a wasteful number, since it uses less digits than its factorization.

1231466145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53114.

The product of its digits is 17280, while the sum is 33.

The square root of 1231466145 is about 35092.2519226111. The cubic root of 1231466145 is about 1071.8668156294.

The spelling of 1231466145 in words is "one billion, two hundred thirty-one million, four hundred sixty-six thousand, one hundred forty-five".