1531344655452 has 48 divisors (see below), whose sum is σ = 3688570253312. Its totient is φ = 493959349440.

The previous prime is 1531344655429. The next prime is 1531344655457. The reversal of 1531344655452 is 2545564431351.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531344655457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9196278 + ... + 9361314.

Almost surely, 2^{1531344655452} is an apocalyptic number.

1531344655452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1531344655452 is an abundant number, since it is smaller than the sum of its proper divisors (2157225597860).

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

1531344655452 is a wasteful number, since it uses less digits than its factorization.

1531344655452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190018 (or 190016 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 48.

The spelling of 1531344655452 in words is "one trillion, five hundred thirty-one billion, three hundred forty-four million, six hundred fifty-five thousand, four hundred fifty-two".