1346531144 has 32 divisors (see below), whose sum is σ = 2939872320. Its totient is φ = 566195136.

The previous prime is 1346531077. The next prime is 1346531149. The reversal of 1346531144 is 4411356431.

It is a happy number.

It is a super-2 number, since 2×1346531144² = 3626292243523897472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1346531144.

It is not an unprimeable number, because it can be changed into a prime (1346531149) 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, 223874 + ... + 229809.

It is an arithmetic number, because the mean of its divisors is an integer number (91871010).

Almost surely, 2^1346531144 is an apocalyptic number.

1346531144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1346531144 is an abundant number, since it is smaller than the sum of its proper divisors (1593341176).

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

1346531144 is a wasteful number, since it uses less digits than its factorization.

1346531144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453749 (or 453745 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 1346531144 is about 36695.1106279842. The cubic root of 1346531144 is about 1104.2620172919.

Adding to 1346531144 its reverse (4411356431), we get a palindrome (5757887575).

The spelling of 1346531144 in words is "one billion, three hundred forty-six million, five hundred thirty-one thousand, one hundred forty-four".