1531143411612 has 72 divisors (see below), whose sum is σ = 3850825741056. Its totient is φ = 473231271456.

The previous prime is 1531143411599. The next prime is 1531143411613. The reversal of 1531143411612 is 2161143411351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531143411613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3556498 + ... + 3963705.

It is an arithmetic number, because the mean of its divisors is an integer number (53483690848).

Almost surely, 2^{1531143411612} is an apocalyptic number.

1531143411612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1531143411612 is an abundant number, since it is smaller than the sum of its proper divisors (2319682329444).

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

1531143411612 is a wasteful number, since it uses less digits than its factorization.

1531143411612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7520295 (or 7520274 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

Adding to 1531143411612 its reverse (2161143411351), we get a palindrome (3692286822963).

The spelling of 1531143411612 in words is "one trillion, five hundred thirty-one billion, one hundred forty-three million, four hundred eleven thousand, six hundred twelve".